Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b5105dc3dfcddd…

MALICIOUS

PDF

394.6 KB Created: 2022-02-04 00:25:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: 9621696b1edaa235fc7b54e5182d3faa SHA-1: 144e4decbd9d6194de0265b5282e2fd7e06b8f06 SHA-256: 72b5105dc3dfcdddc037ff4e7c142dc0f2e9605e3d93f7308c84fccad9edacc8
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple external URIs, including one identified as an SEO redirector for free-download phishing. The ClamAV detection and ML classifier also flagged this file as malicious. The embedded JavaScript likely facilitates the download or execution of a secondary payload from the identified URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6811

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://fecuq.co.za/XSRYdR1H?utm_term=verbe+etre+et+avoir+au+futur+pdf PDF link annotation
    • http://visusmarble.com/images_upload/files/5108923167.pdfIn PDF document text
    • https://franchise-vietnam.com/app/webroot/img/files/sowewaleluwopaziguxigaw.pdfIn PDF document text
    • https://www.fibertech1.com/my_content/js/ckfinder/userfiles/files/27166259478.pdfIn PDF document text
    • http://arcomproltd.com/userfiles/file/gikopekenujagerewibefike.pdfIn PDF document text
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1612f19e0b4cd7---48556211727.pdfIn PDF document text
    • http://fazekaskozpont.hu/images/upload/file/vuvabe.pdfIn PDF document text
    • http://ikmblansko.cz/files/upload/files/99696452198.pdfIn PDF document text
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1611b10d527c7d---xamudadirirufixer.pdfIn PDF document text
    • https://sahodayabbsr.com/test/fckeditor/file/jefumekabiwegebokatulub.pdfIn PDF document text
    • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614b1edf537f2---15014801778.pdfIn PDF document text
    • http://www.verneteco.com/ckfinder/userfiles/files/9577008470.pdfIn PDF document text
    • https://hzautomatisering.nl/userfiles/file/vezijuzetalaxubisolumi.pdfIn PDF document text
    • http://kpglearningbox.com/assets/kcfinder/upload/files/57842883608.pdfIn PDF document text
    • https://inayatinterior.workstatus.in/images/file/wakevalokaziwabexipavuz.pdfIn PDF document text
    • http://kwartetproforma.com/userfiles/file/lemopavigiru.pdfIn PDF document text
    • http://tageedesign.com/ssmpt/documents/file/fosamagebaxanolewomijoni.pdfIn PDF document text
    • http://geometracosentino.com/userfiles/files/62826174416.pdfIn PDF document text
    • http://wellcomm.co.id/assets/kcfinder/upload/files/48637600686.pdfIn PDF document text
    • http://bangkokmagnetwire.com/ecodev_test/image_system/files/dorinenopojovoziwes.pdfIn PDF document text
    • http://karinameal.ru/imgdish/files/88650222044.pdfIn PDF document text
    • http://pk.mo/userfiles/file/fiwugosoditabo.pdfIn PDF document text
    • http://erfaspot.com/resimler/files/mupawifadomorixabakodumum.pdfIn PDF document text
    • https://cbolean.com/wp-content/plugins/super-forms/uploads/php/files/16ef8db2c88d8b0d2509dc69da762ef9/mutewafufatanisezisi.pdfIn PDF document text
    • http://bcslaw.hu/admin/fck_upload/file/vumepepulevexufona.pdfIn PDF document text
    • http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615265e8e13a9---fifote.pdfIn PDF document text
    • http://diegogenna.it/userfiles/files/rutarizobubexivu.pdfIn PDF document text
    • https://vinasimex.com/uploads/file/85757100022.pdfIn PDF document text
    • https://mumegram.com/userfiles/file/piruwexilogibomunanivinu.pdfIn PDF document text
    • http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/161d35342d165d---zoteki.pdfIn PDF document text
    • http://yossy.biz/userfiles/file/25251484591.pdfIn PDF document text
    • http://china-miyaco.com/img/file/20221124941.pdfIn PDF document text
    • http://vivaldiskibus.com/FileData/ckfinder/files/20210901_D90704918DD02E0A.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_off0005ba29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BA29 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0005d144.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D144 18880 bytes
SHA-256: bedafed2e2f08031f8dbef90a83a68f690e61e6c7ef19838740e15c436d6dd20
font_02_sfnt_off00060108.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60108 10448 bytes
SHA-256: 7e8f13389d7f607e0378eaf062457becd47f984d4ecb01aff6c993b1fbf628ad

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