Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f907b84a9a95498…

MALICIOUS

PDF

50.6 KB Created: 2021-02-22 23:55:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f537d48da6d8ab496c88c0a6ce02b623 SHA-1: 2f01e1ba45f40fa965f0724b5bb150ebf190f637 SHA-256: 4f907b84a9a954984fe7f21bfd547e8d5c6d7b68a6963c789bc57d8b1a59a82f
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document is identified as a phishing lure due to its image-heavy nature and embedded clickable link. The heuristic 'PDF_IMAGE_LURE' indicates a typical phishing shape where a screenshot hides a button to launch an attacker URL. The presence of numerous external URIs, many hosted on disposable domains, further supports this. Although no scripts were explicitly extracted, the PDF format can embed JavaScript, which is often used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7360

Heuristics 5

  • 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 50 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://seumenha.ru/aws?utm_term=como+hacer+fotografia+documental
    • https://static.s123-cdn-static.com/uploads/4408720/normal_5ff5a04631d22.pdf
    • https://dibevapanowodi.weebly.com/uploads/1/3/0/7/130776811/pufokanogiduwab.pdf
    • http://myfoxing.online/hdfc_ergo_motor_claim_formumlvp.pdf
    • https://cdn.sqhk.co/busumodofu/fgjghih/78220597989.pdf
    • https://cdn-cms.f-static.net/uploads/4375086/normal_601b56869d1fa.pdf
    • https://cdn-cms.f-static.net/uploads/4483089/normal_600cdf51a5c04.pdf
    • http://copyrightsupporteds.com/what_is_christianity_sacred_textuce20.pdf
    • http://brettlockhart.com/fekubejudevawujuxudibomqxc57.pdf
    • http://xplaintome.ru/rezixobefapiweminudupeg3n.pdf
    • http://hq-cleartv.info/zifofaleviponiri873lf.pdf
    • http://arbitestpark.xyz/zufobusiluwujarusuvejobem6m4d.pdf
    • http://kompledom.com/ti_facebook_lite_apkpurela5hp.pdf
    • https://cdn.sqhk.co/pofifarim/jhicCjj/gozisukilanejorej.pdf
    • http://temilops.xyz/analyzing_categorical_data_worksheet9msu4.pdf
    • https://static.s123-cdn-static.com/uploads/4475216/normal_5fcbbeb04a067.pdf
    • https://cdn.sqhk.co/fusajovogi/bgjggjh/61082696330.pdf
    • https://s3.amazonaws.com/vuxagixil/14540035496.pdf
    • https://s3.amazonaws.com/xapota/fesamosejex.pdf

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