Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0fe70060b8744b7…

MALICIOUS

PDF

94.3 KB Created: 2021-06-28 08:24:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 2c6e933542e8d182595c351f6d26c01a SHA-1: 0cc798ac7290d564ab80ad6fa46a5a40c1a7ecc1 SHA-256: c0fe70060b8744b76350ff64f7f002d1ceb05851441932ffef4bf011288c0d1e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including ML classification and ClamAV, indicating malicious intent. It contains numerous external links, many pointing to compromised CMS upload storage and disposable hosting, suggesting a link farm designed to redirect users. The presence of embedded URLs and the nature of the heuristics strongly suggest this document is part of a phishing or malware distribution campaign, likely using embedded JavaScript to facilitate redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9935

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://medvor.ru/uplcv?utm_term=cares+act+excess+business+losses PDF link annotation
    • http://bakoca.hu/files/file/pugek.pdfIn PDF document text
    • http://sns-russia.ru/userfiles/file/52106094775.pdfIn PDF document text
    • http://studiosaletta.it/userfiles/files/nuxifukirisawaril.pdfIn PDF document text
    • https://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/dd190b7dbd3881b8e7921e3b04e63447/vinusetaluxike.pdfIn PDF document text
    • http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b514d22917---49233035350.pdfIn PDF document text
    • http://evolutionchonburi.com/userfiles/files/wedezasolerojezo.pdfIn PDF document text
    • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160891e4e3ce50---2674814009.pdfIn PDF document text
    • https://medicentrumnz.eu/medicentrum/files/file/morenizijufutugapu.pdfIn PDF document text
    • http://aaaexpressac.com/userfiles/file/fipovo.pdfIn PDF document text
    • http://dobraukraina.org/sites/all/sites/dobraukraina.org/files/tokakitawebem.pdfIn PDF document text
    • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160985f3d53c28---joxifelufizumoponeg.pdfIn PDF document text
    • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/618c2001268d2512eb828f8df83ba4f9/10276786840.pdfIn PDF document text
    • http://projectbudapest.hu/wp-content/plugins/formcraft/file-upload/server/content/files/1608be252e2207---1818509456.pdfIn PDF document text
    • http://dirabrealtors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160738a68616c3---gobanugixenimisige.pdfIn PDF document text
    • http://ahchala.com/img/file/16212699523.pdfIn PDF document text
    • http://astro2sphere.com/admin/images/file/pomomudepobewebuwajit.pdfIn PDF document text
    • https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/sfksvmg0caoeg0ibr7mqfik0jb/zajuzi.pdfIn PDF document text
    • http://goldenteriyaki.com/uploads/files/36898592219.pdfIn PDF document text
    • http://jrmhandling.nl/upload/file/44976350431.pdfIn PDF document text
    • https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/3iajvk9p0trq8dmn1j0f549q8n/41186837605.pdfIn PDF document text
    • http://mini-garden.ru/userfiles/file/benikozomujezepudawa.pdfIn PDF document text
    • http://navigator-nsk.ru/userfiles/file/61772705039.pdfIn PDF document text
    • http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160706d382c3bf---kexisuzupipazugirivef.pdfIn PDF document text
    • http://gianphoiduyloimodel.com/Images_upload/files/zogimezopezedovigobojemu.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_off00010da3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DA3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000125b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125B5 17436 bytes
SHA-256: c1b16674087a7a4ecf813a1151b6110e3f53ab3ba83ff9dd62f2bf73dd729bbe
font_02_sfnt_off0001537c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1537C 10596 bytes
SHA-256: 5f691ed32b85c0990a93317bd38e29b8866c1fe6874a61c927387450cade13b6

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