Malicious PDF — malware analysis report

Static analysis result for SHA-256 64c2170b4525b861…

MALICIOUS

PDF

67.6 KB Created: 2021-01-31 20:20:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 839e398c8c679f92b79bf2f62a6685dc SHA-1: 66e9b01682db0c3764008407ea27ff2168e997a7 SHA-256: 64c2170b4525b8619aa5211c41e7be4273cf8cde543b71a3a79170e3b4b7cfbf
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9695

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
  • 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.
  • 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=abviewer+11+serial+key+free PDF link annotation
    • https://kasitawudak.weebly.com/uploads/1/3/1/3/131380619/kogalone.pdfIn PDF document text
    • https://benipotuwazel.weebly.com/uploads/1/3/4/4/134445242/156a5.pdfIn PDF document text
    • http://nesobaka3.xyz/kedovejulijelopubatotf7dp.pdfIn PDF document text
    • http://sarkife.site/jump_ball_rules_basketballprjs9.pdfIn PDF document text
    • https://vaxinukosiju.weebly.com/uploads/1/3/4/6/134625250/kutupulugubut-nanike.pdfIn PDF document text
    • https://dubitofux.weebly.com/uploads/1/3/4/4/134458445/xelubuwe.pdfIn PDF document text
    • http://pobuzajabazuwu.iblogger.org/62718431909.pdfIn PDF document text
    • https://wemogejivaje.weebly.com/uploads/1/3/1/0/131070934/bad455e5fb1a.pdfIn PDF document text
    • https://binikefesomeb.weebly.com/uploads/1/3/5/3/135386190/dimizusejokoruluka.pdfIn PDF document text
    • http://bettermoneytips.com/73060498008l9t3r.pdfIn PDF document text
    • http://nefritthebestthing.site/tiny_bird_garden_deluxe_free_downloadweedm.pdfIn PDF document text
    • http://italysummer.fun/nafemesaxaxikuxitalabalanf9ntu.pdfIn PDF document text
    • http://golepikoxeware.22web.org/turagexevadoluminogu.pdfIn PDF document text
    • https://pizipeko.weebly.com/uploads/1/3/4/6/134611096/fegemuxemeb-zegilezokepaxi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xojarigaxajol.epizy.com/musidutusugamobiwebowo.pdfIn PDF document text
    • http://moganip.epizy.com/50680363082.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e239.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE239 4752 bytes
SHA-256: 655892c301b9f9d9c51fe7600395d6b097e2fe434ee1aa782d49a03ba272dc54

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