Malicious PDF — malware analysis report

Static analysis result for SHA-256 8458770e6ae9db77…

MALICIOUS

PDF

58.6 KB Created: 2021-04-05 00:13:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb98495a51d6e522ed208eb14f9360c6 SHA-1: 6e6d8594dd6770b81b392603b901f78ce013f783 SHA-256: 8458770e6ae9db7764441772808b6ee2ad305881a4db937071c791c26e406bb1
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file is identified as malicious by ClamAV and ML classifiers, exhibiting characteristics of a phishing lure. It contains an image-only document with a click-outward action, typical of attempts to trick users into visiting malicious URLs. The presence of numerous external links, including one to 'baarspo.ru', suggests a distribution or phishing campaign. No scripts were extracted, but the PDF structure itself is indicative of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6893

Heuristics 5

  • 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.
  • 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 58 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://baarspo.ru/award?keyword=mapa+de+areas+protegidas+de+guatemala+pdf
    • https://cdn.sqhk.co/velabolo/ihagjha/bogozurewilizotuzodoxomu.pdf
    • https://roserilufelojow.weebly.com/uploads/1/3/1/8/131856860/b0d87c2faa8.pdf
    • http://tunewejewuz.mypressonline.com/kumidawebovonijekavixu.pdf
    • https://cdn.sqhk.co/gezubesekar/heqhhii/code_formatter_online_js.pdf
    • https://resivoviwogo.weebly.com/uploads/1/3/3/9/133987135/455014.pdf
    • https://cdn.sqhk.co/xubuguxovim/RAjbAAv/22538660054.pdf
    • http://figejewumoposes.getenjoyment.net/sunojokunafuwudefo.pdf
    • https://cdn.sqhk.co/nezazexador/hsghhie/28831491576.pdf
    • https://cdn.sqhk.co/kovixileta/whcjeia/68843443106.pdf
    • https://cdn.sqhk.co/bitizulokiva/qDifrEI/xipiti.pdf
    • https://uploads.strikinglycdn.com/files/b6c72d13-61db-401a-a4e4-1685875141e8/mdr-xb950bt_not_charging.pdf
    • https://s3.amazonaws.com/zoluwivebiro/17829458612.pdf
    • https://s3.amazonaws.com/fotepopunaj/bubuzulasowotirisitepima.pdf
    • https://uploads.strikinglycdn.com/files/dea36c9f-8dff-4ca6-a01a-edeabb656005/what_does_going_back_to_my_roots_mean.pdf
    • https://uploads.strikinglycdn.com/files/6150ae72-a203-4177-be0c-bf1a08dbb540/niroripevetubaxonorapux.pdf
    • http://puvapulugo.onlinewebshop.net/51928781922.pdf
    • https://uploads.strikinglycdn.com/files/81d2f0db-dfc1-4845-b9a3-51044abbe7c7/ferinok.pdf
    • https://uploads.strikinglycdn.com/files/c8a21a87-41cd-4d8b-b7ce-2d765d851bd8/12969663190.pdf

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