Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3b1d3de4a51d6d…

MALICIOUS

PDF

361.5 KB Created: 2022-03-01 13:47:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: c25a42581a1672973f1ba0b9c03af1f7 SHA-1: 3941a9063b1051d67d5618535227046913ae3d25 SHA-256: 4e3b1d3de4a51d6dc3c7550a4768cabb46900b3abab4d6477e704e56c039b04b
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

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 and execution of a second-stage payload from one of the provided URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6543

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://lovig.co.za/XSRYdR1H?utm_term=best+mind+games+for+pc PDF link annotation
    • http://afgesproken.nl/kcfinder/upload/files/77251789320.pdfIn PDF document text
    • https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16201796793551---13444317360.pdfIn PDF document text
    • https://wamsconference.com/wp-content/plugins/super-forms/uploads/php/files/97dd82a6bafdc677c3d8aa455a07d811/69569994221.pdfIn PDF document text
    • http://bfup.org/ckeditor/kcfinder/upload/files/77346916934.pdfIn PDF document text
    • https://www.iccct21.scrs.in/kcfinder/upload/files/vuxukusubunuzafakomodi.pdfIn PDF document text
    • https://www.hotelamoha.it/wp-content/plugins/formcraft/file-upload/server/content/files/161f9fddc94fa8---54027554505.pdfIn PDF document text
    • http://villapastello.com/admin/data/files/files/28004900203.pdfIn PDF document text
    • https://wiltech-hk.com/editor_upload/file/86233432323.pdfIn PDF document text
    • http://moonyart.ru/admin/ckeditor/kcfinder/upload/files/95598045003.pdfIn PDF document text
    • http://kuzfarm.ru/images/file/67006024197.pdfIn PDF document text
    • http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16217fc733af5b---nivolug.pdfIn PDF document text
    • https://adrfarysz.pl/userfiles/file/98123179774.pdfIn PDF document text
    • http://blackswaninfotech.com/kcfinder/upload/files/44266207557.pdfIn PDF document text
    • http://floral-design-lindgens.de/userfiles/file/fikalilegozurubexux.pdfIn PDF document text
    • https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/d141b7daa325e4464e74581ab2878ac2/99159073897.pdfIn PDF document text
    • http://xn--80age2amlc.xn--80adxhks/pics/images/file/41931824407.pdfIn PDF document text
    • http://myphamso1.net/uploads/files/sezegetagobupufumuzufa.pdfIn PDF document text
    • http://nhadatv.com/webroot/img/files/vulolitewusonalirusopejip.pdfIn PDF document text
    • https://www.vek-bg.com/app/templates/js/ckfinder/userfiles/files/82211436641.pdfIn PDF document text
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/161f885f37ed7f---79154214393.pdfIn PDF document text
    • https://biirbeh.mn/images/content/file/rapavitojifumawafimage.pdfIn PDF document text
    • http://aquarium-kochi.com/app/webroot/ckfinder/userfiles/files/kevezepoviji.pdfIn PDF document text
    • http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161fbf2100b841---22005498992.pdfIn PDF document text
    • https://coastalstudio.com/images/main/file/gewuzuru.pdfIn PDF document text
    • https://miminku5.com/contents/files/pajip.pdfIn PDF document text
    • https://photojet.net/userfiles/file/musaridususefolemuk.pdfIn PDF document text
    • http://forepic.com/_UploadFile/Images/file/3174468900.pdfIn PDF document text
    • http://divorcefinance.nl/uploads/file/87173194763.pdfIn PDF document text
    • https://pima-alarms.net/slicice/file/sozokokel.pdfIn PDF document text
    • http://www.chinnanaidoo.org.za/kcfinder/upload/files/xumoneme.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_off00053636.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53636 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00054d56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54D56 10968 bytes
SHA-256: 4ed54cd55e5ba7dbb7484d0fa6ea67abf270b54464163670e38ca2a34fe725bd
font_02_sfnt_off00056697.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56697 18224 bytes
SHA-256: b1ea45f7efc7556a1756ab8b94a1605ae85ceea302fa6584a028d77c435704db