Malicious PDF — malware analysis report

Static analysis result for SHA-256 47ef94baf4de1fc4…

MALICIOUS

PDF

40.7 KB Created: 2021-02-24 17:11:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 82a4a00eacd891618a779e5ae0b09ee1 SHA-1: 3c8d5499240983d1905a9cc9dae0decc27e62bba SHA-256: 47ef94baf4de1fc41cd3a23d8fc129a2d46e5dc7273cb38ce4439f634fba2b7c
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a phishing lure due to its image-only nature and embedded clickable link. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm intended to redirect users to malicious sites. The ClamAV detection and ML classifier further support its malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8125

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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 40 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://bologen.ru/strik?utm_term=great+writing+4+5th+edition+ebook PDF link annotation
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    • https://nazewaraja.weebly.com/uploads/1/3/5/9/135959380/vanexepewemumim_xosulemafitunig.pdfIn PDF document text
    • https://delumatoli.weebly.com/uploads/1/3/5/3/135392794/jubugojixirire.pdfIn PDF document text
    • https://cdn.sqhk.co/jidelugob/ghhihjc/world_war_zombie_movie_download.pdfIn PDF document text
    • https://guxuxexor.weebly.com/uploads/1/3/0/7/130775085/zezoduxolagi_xelafusutufenas.pdfIn PDF document text
    • https://xoberaditide.weebly.com/uploads/1/3/4/6/134645794/2422415.pdfIn PDF document text
    • http://xepivutede.22web.org/70669767666.pdfIn PDF document text
    • https://pemogele.weebly.com/uploads/1/3/5/3/135324676/detagu_roxit_woravor_zifagomobes.pdfIn PDF document text
    • https://xuzomavarek.weebly.com/uploads/1/3/1/3/131383242/fimuzate_kizizo.pdfIn PDF document text
    • https://voloxamofe.weebly.com/uploads/1/3/0/8/130874475/5a8b65.pdfIn PDF document text
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    • https://fuvutefimege.weebly.com/uploads/1/3/1/4/131453053/topirunidibasuk.pdfIn PDF document text
    • http://sokorimelizopa.iblogger.org/aptitude_test_file.pdfIn PDF document text
    • https://cdn.sqhk.co/matikefateri/ehWugdR/20056132237.pdfIn PDF document text
    • https://cdn.sqhk.co/ziveluki/gh3je4c/horror_escape_games.pdfIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/wigerivuwanujepevuboj.pdfIn PDF document text
    • https://s3.amazonaws.com/xopugup/podag.pdfIn PDF document text
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    • https://s3.amazonaws.com/luworizesupox/bigo_live_hack_mod_apk.pdfIn PDF document text
    • http://gevalej.epizy.com/nidesejilijapenigukog.pdfIn PDF document text

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