Malicious PDF — malware analysis report

Static analysis result for SHA-256 108e7ba4d4b35fd8…

MALICIOUS

PDF

45.6 KB Created: 2021-07-17 02:50:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 04027eaf25ed87d91f89a21182cdffdb SHA-1: 37e9c55dc060e8588bd8e6c76f9dae26a30e1d51 SHA-256: 108e7ba4d4b35fd880e9a2bccca4dec7b8db2b639f96c4ec588a4d8ad4e89c86
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. It contains numerous links to potentially compromised WordPress sites and other domains, suggesting an attempt to redirect users to malicious content or download further payloads. The document's structure and heuristics indicate it is designed to appear as a legitimate file while hiding clickable elements that lead to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5569

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 45 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 https://bykevin.com/wp-content/plugins/super-forms/uploads/php/files/6fc54ab64d4367d6d2e1cc3340ed7405/86369991472.pdf
    • https://beysukonaklari.com/ckfinder/userfiles/files/tamukawigodawozedo.pdf
    • http://insureacompany.com/userfiles/file/linurufazatekisapop.pdf
    • http://glenbrooksouth1970.com/clients/1/17/17fc1bd13d5538a69f39d58c869d2fc5/File/41357098068.pdf
    • http://chemonova.com/FCKeditor/file/nenolovovuzominapukuradu.pdf
    • https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607743d425b8b---67657254049.pdf
    • https://tlpnw.com/wp-content/plugins/super-forms/uploads/php/files/bc4cd5727b119307deca8efb7824c54e/34928432736.pdf
    • http://cestovni-postylka.eu/userfiles/file/23193175285.pdf
    • http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160c9653f5e6c5---21668809046.pdf
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/160703eb6ab192---1763506138.pdf
    • http://bioscipublisher.com/files/upfiles/file/bumopogudaxava.pdf
    • https://bloomeng.com/uploads/66906036214.pdf
    • https://ceccarbotosani.ro/userfiles/file/mupozafenirul.pdf
    • http://aksaaydinlatma.com/img/editor/image/file/56436105845.pdf
    • https://best-turbos.com/wp-content/plugins/super-forms/uploads/php/files/7bf98a07295f74f22b7ca77df980a790/70695565228.pdf
    • http://stallingreunion.com/clients/a/a3/a37dbb3dca22f8cb40f44de83fe48269/File/nedaxamuduw.pdf
    • http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c677113c700---14797321440.pdf
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607211dbb3b53---tejirowaf.pdf
    • http://fmi.lu/userfiles/files/xosug.pdf
    • http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/160791440b32a1---mivikenipafukafibetepulov.pdf
    • http://kojeneckezbozi.eu/userfiles/file/52011555947.pdf
    • https://mimpishio2.net/contents//files/24249728145.pdf
    • http://psmpetcare.com/clients/76030/File/negadig.pdf
    • https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/kqqm3nn34ng4kq5230c0f0cca3/jitopipugajebose.pdf
    • http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609d330056be5---jifefadufaveg.pdf
    • https://admonks.ru/wp-content/plugins/super-forms/uploads/php/files/a22364cae750608864741bb7126e0108/jexilibadaw.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=how+to+read+ruler+lines+in+inches

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