Malicious PDF — malware analysis report

Static analysis result for SHA-256 1160dc7c4f494abb…

MALICIOUS

PDF

304.0 KB Created: 2022-01-27 07:04:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-04
MD5: 3230d77df38158a9d29b2a4d4c6f1ba9 SHA-1: fef8a3fc231fe12cce368311909f3d893bea3692 SHA-256: 1160dc7c4f494abb0e178234a13b7290f0bc28ab6c0956281711cb334d58bc08
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple external URIs, including a link farm pointing to compromised WordPress upload storage. The primary lure appears to be an image linking to an SEO redirector, which is a common tactic for phishing campaigns. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9570

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://mifuj.co.za/XSRYdR1H?utm_term=incident+reports+near+me PDF link annotation
    • http://seto.cz/uploads/pinamejibipavedasapisil.pdfIn PDF document text
    • http://palami.by/images/file/55550640210.pdfIn PDF document text
    • https://perfecthospitals.com/ckfinder/userfiles/files/masifodolivor.pdfIn PDF document text
    • http://eldmsh1.ru/js/ckfinder/userfiles/files/bukusemipaxes.pdfIn PDF document text
    • http://videotour24.com/data/fckupload/file/30434832164.pdfIn PDF document text
    • http://dulichgiahy.com/upload/file/zalolipakoset.pdfIn PDF document text
    • http://ifaistos.reality.gr/~triantaf/images/file/dipuwabogifaragagowura.pdfIn PDF document text
    • http://gavionescodeinsa.com/userfiles/31333725973.pdfIn PDF document text
    • https://www.alapan.org/fckimages/file/retusemumogodizipijibad.pdfIn PDF document text
    • http://adance0112.com/upfile/editor/file/pobenokavizosuw.pdfIn PDF document text
    • http://talcmanagement.com/uploaded_files/userfiles/files/8614392373.pdfIn PDF document text
    • https://icnj.net/ckeditor/ckfinder/userfiles/files/nalovopereranokaruxepez.pdfIn PDF document text
    • http://grupomarsamo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161787e1060fd0---sezetaj.pdfIn PDF document text
    • http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/161994367c5b94---xusorezenov.pdfIn PDF document text
    • http://greeninfrabd.com/assets/ckeditor/kcfinder/upload/files/82755751172.pdfIn PDF document text
    • https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/16170653824784---53648694642.pdfIn PDF document text
    • https://moma-restaurant.com/wp-content/plugins/formcraft/file-upload/server/content/files/161b506dc8f70c---risugi.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_off000455d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x455D4 17344 bytes
SHA-256: 9588af67f7af75239272ac55fdcfb30fb45cb15bef6a7759436c49508f4f767c
font_01_sfnt_off00048315.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48315 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off000499b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x499B9 10580 bytes
SHA-256: 4e3f392079a2f5068032964a95d9c204bf06fb5df8454b388b2eddad60ebb3b3