Malicious PDF — malware analysis report

Static analysis result for SHA-256 f75897f00a218462…

MALICIOUS

PDF

43.2 KB Created: 2021-09-03 00:59:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: aea88726e57ef5639bec3d55cc309def SHA-1: f4b411dc17178cd3b8c9361778cf51819c392a38 SHA-256: f75897f00a218462f65d48ef8911487da3ab6424a31fa711a11c2ce94efd33f8
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure with an image-only design and clickable actions. Multiple heuristics indicate the document functions as a link farm, directing users to various compromised CMS upload locations and disposable hosting sites. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it is designed to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6809

Heuristics 6

  • 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-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 43 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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
  • 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 http://hopkinshigh62.com/clients/7/77/7764523e397120ad9b09b1da26998858/File/polotozovu.pdf
    • https://www.aceitedeoliva.com/wp-content/plugins/super-forms/uploads/php/files/80338a68102f12c497ddef4f915e0b56/90160699269.pdf
    • https://churchosonline.com/wp-content/plugins/super-forms/uploads/php/files/5e22d5fb3b99efdfd3d41b13e26008f8/mapifav.pdf
    • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608ea7ffa4bf4---dugizido.pdf
    • https://stallion-international.com/userfiles/file/17828688643.pdf
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0c6d5ec94b---migurogotugi.pdf
    • http://studiolegalezullo.eu/userfiles/files/tulas.pdf
    • http://www.johnknox.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160a6f875c78f4---2698013815.pdf
    • http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160aa3e9e828f8---dovupajobazimamoxofunadew.pdf
    • http://polymer-optix.de/userfiles/file/81379979749.pdf
    • http://hindel-relax.ch/ckfinder/userfiles/files/pukazizupuj.pdf
    • https://calmoinc.com/upload/editor/file/xeweki.pdf
    • http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/16077ebd3aa127---89820857894.pdf
    • http://naturabliskociebie.pl/userfiles/file/50514061956.pdf
    • https://cissud.it/uploads/ck_editor/files/47285396352.pdf
    • http://ever0036.com/assets/uploads/ckedit/files/20210810123824.pdf
    • http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/1612a0ce0d55c0---88518052856.pdf
    • https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074b817dc665---39953140085.pdf
    • https://poulinstrapscan.com/userfiles/file/47987572548.pdf
    • http://szilasfood.hu/pic_upload/files/11465279590.pdf
    • http://popnmusic.fr/userfiles/file/pujajiwixegizarenivar.pdf
    • http://hotelbelleepoque.bg/userfiles/file/87877606449.pdf
    • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160fe8606d108d---mitidipenodatugifinala.pdf
    • https://asken.as/bilder/file/xujisemozajiju.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=catalogo+da+natura+pdf

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