Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3e565f3d73fde96…

MALICIOUS

PDF

368.8 KB Created: 2022-06-08 21:01:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2022-07-15
MD5: 7ba5205185d811d23a4da7e24a190d20 SHA-1: 6646a6d35b653c8de026d982de347a4ceddf467d SHA-256: f3e565f3d73fde965c4e631be58b19fb13fa1df0fb39119261bc16ee6a69c4f7
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded JavaScript and multiple external URIs, including one identified as an SEO redirector for a 'free-download phishing' lure. The ClamAV detection and ML classifier further indicate malicious intent. The embedded JavaScript likely facilitates the download or redirection to a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6485

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://colod.co.za/XSRYdR1H?utm_term=a2+secret+of+the+slavers+stockade+pdf+file+s+free PDF link annotation
    • http://ichieh.tw/uploads/files/202205130300307030.pdfIn PDF document text
    • https://fowanexi.weebly.com/uploads/1/3/4/6/134648222/gujivutex.pdfIn PDF document text
    • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16285b74ce4cd3---ruwopumalamatudamerowu.pdfIn PDF document text
    • https://www.medicalart.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1627ee03a899bb---bemisuj.pdfIn PDF document text
    • https://werobipopopavuv.weebly.com/uploads/1/3/1/1/131163729/ddc6c542.pdfIn PDF document text
    • https://dverimilana.ru/media-temp/img/uploads/files/70807378767.pdfIn PDF document text
    • https://prizmaemys.com/img/files/petodazuxi.pdfIn PDF document text
    • https://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/734pbgeldh0gj0r1c23coavnmj/62446877146.pdfIn PDF document text
    • https://autoprofi.ua/userfiles/file/86224905470.pdfIn PDF document text
    • http://medob.org/SITE/files/editor/file/nulezesaxisekixujilutil.pdfIn PDF document text
    • http://healthmindsacademy.com/admin/ckeditor/kcfinder/upload/files/23026159595.pdfIn PDF document text
    • https://vialivonica.eu/userfiles/files/guwipiba.pdfIn PDF document text
    • https://keratikada.weebly.com/uploads/1/4/1/2/141280061/2461046.pdfIn PDF document text
    • http://longarmquiltacademy.com/fckeditor/userfiles/file/vaguliwugomawetebenik.pdfIn PDF document text
    • https://kalafiber.com/webroot/js/ckfinder/userfiles/files/49225487830.pdfIn PDF document text
    • http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/1627eafa26c4b5---649356932.pdfIn PDF document text
    • https://denewesex.weebly.com/uploads/1/4/1/3/141327584/aa660.pdfIn PDF document text
    • https://alakharia.com/public_html/userfiles/file/60155545371.pdfIn PDF document text
    • https://guxosenenizezov.weebly.com/uploads/1/3/4/5/134598055/9934364.pdfIn PDF document text
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620c23d7cfa41---waluwufifuxobumuvozopo.pdfIn PDF document text
    • https://kokexofagisukop.weebly.com/uploads/1/3/2/7/132710589/sarobavowit.pdfIn PDF document text
    • https://fadetelipivike.weebly.com/uploads/1/3/4/5/134523249/gumameja.pdfIn PDF document text
    • http://travelsolutions.co/ckeditor/kcfinder/upload/files/mewowogekomowexemuvawo.pdfIn PDF document text
    • https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/161f91cb8b6fab---37790907516.pdfIn PDF document text
    • http://aspbae.org/userfiles/file/watixerizoj.pdfIn PDF document text
    • https://reha.bg/content/upload/file/kurebapo.pdfIn PDF document text
    • http://jerry-cheese.com/kcfinder/upload/files/36536681156.pdfIn PDF document text
    • https://vatelonefupak.weebly.com/uploads/1/3/7/5/137515915/fe3b8f517a41857.pdfIn PDF document text
    • http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1621229e779057---91347227909.pdfIn PDF document text
    • http://usateatop.com/_upload/files/tobawewu.pdfIn PDF document text
    • https://bimenejujuw.weebly.com/uploads/1/3/4/5/134592033/6696047.pdfIn PDF document text
    • http://ferbogar.com/assets/kcfinder/upload/files/66354566805.pdfIn PDF document text
    • http://namlinhchisapa.com/userfiles/image/file/46499887336.pdfIn PDF document text
    • https://dibuponabax.weebly.com/uploads/1/3/4/3/134340508/b40c13f68.pdfIn PDF document text
    • https://muzifadisuluso.weebly.com/uploads/1/3/5/3/135347683/0582948.pdfIn PDF document text
    • https://starfoil-mail.nl/uploads/wysiwyg/46630117638.pdfIn PDF document text
    • http://unstitchedfootwear.com/files/file/detepexotajuwilukimibewo.pdfIn PDF document text
    • https://disebaxixifos.weebly.com/uploads/1/3/4/7/134714932/zidarizu.pdfIn PDF document text
    • http://baota84000.coco1490.com/upload/file_folder/file/85719956956.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054fa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54FA9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000567bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x567BB 19164 bytes
SHA-256: 8186ba8fba3a8fbbf75016957ee625017affaed68b4fe38e1d82cb2f5db1b6a1
font_02_sfnt_off0005996e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5996E 10872 bytes
SHA-256: b3232b7c3ed8d3bc50fe0e6a3d492d949a667f4686fed96f107fabb4c0ee7df3