Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3919d2fb31ad36d…

MALICIOUS

PDF

66.5 KB Created: 2021-06-04 01:26:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dfe72743cdff640bd188fe2ab9aa6825 SHA-1: 274acc14e97bf63fb1eb540e86f1420ff1138962 SHA-256: c3919d2fb31ad36d8b06170973eecaefad4ed86e5a9b20264b844061fd3b47cd
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs, many of which point to disposable hosting services and are likely part of a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to exploit user interaction to navigate to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7139

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://philabc.ru/pbw?utm_term=pokemon+gba+rom+hacks+fire+red
    • https://bipixexomalexu.weebly.com/uploads/1/3/4/3/134349320/zazoxoruzi.pdf
    • https://static.s123-cdn-static.com/uploads/4422906/normal_60016a55e9993.pdf
    • https://cdn-cms.f-static.net/uploads/4499334/normal_60580af57afab.pdf
    • https://cdn-cms.f-static.net/uploads/4475989/normal_5fdc1ada3b09a.pdf
    • https://static.s123-cdn-static-d.com/uploads/4404745/normal_60b3074aafd07.pdf
    • https://cdn-cms.f-static.net/uploads/4402488/normal_5fda813047e8a.pdf
    • https://rogapasutidubu.weebly.com/uploads/1/3/1/4/131438129/8867236.pdf
    • https://static.s123-cdn-static.com/uploads/4369499/normal_5ff7730f1ae04.pdf
    • https://renepavavoz.weebly.com/uploads/1/3/4/0/134012855/7ba0e2.pdf
    • https://cdn-cms.f-static.net/uploads/4484375/normal_601abbad58f5c.pdf
    • http://bezawagiga.pbworks.com/w/file/fetch/144559932/bathstore_shower_screen_installation_instructions.pdf
    • http://zizovitunex.pbworks.com/w/file/fetch/144483750/tatezedubefe.pdf
    • http://garewewaziwu.pbworks.com/w/file/fetch/144541749/lesapijasupa.pdf
    • http://wenuveraroto.pbworks.com/f/brush_your_teeth_lyrics_little_baby_bum.pdf
    • http://tarogifere.pbworks.com/f/ejercicios_de_parabola_horizontal_con_vertice_fuera_del_origen.pdf
    • https://uploads.strikinglycdn.com/files/b9a63068-1080-4ed1-aa60-b14eb6a65393/goxowidikatapagulareguk.pdf
    • http://wekibivu.pbworks.com/f/77081539006.pdf
    • https://uploads.strikinglycdn.com/files/01007ae8-8ea8-42e3-b22d-14314cc942e8/sipobopiru.pdf
    • http://gabekujijud.pbworks.com/f/jacquie_lawson_cards_are_they_free.pdf

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