Malicious PDF — malware analysis report

Static analysis result for SHA-256 06c70451b2d6acf7…

MALICIOUS

PDF

93.7 KB Created: 2021-09-01 15:34:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 8865d5caebd977cae842d5556bb9aa5d SHA-1: 6a160f8d99e9fe774fea84b7fcaab1ee1b4c8a41 SHA-256: 06c70451b2d6acf7f767ef210fda300909c9e9fd4296e858aa9a70ef79d924ae
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs pointing to various domains, many of which appear to be compromised WordPress sites. The presence of 'utm_term' parameters suggests these links are intended to track user interactions, common in phishing or malware distribution campaigns. No scripts were extracted, but the overall structure and URL distribution strongly suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9098

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/uplcv?utm_term=csgo+humans+can+only+be+t+fix PDF link annotation
    • https://x-software.cz/data/file/pudojukemivululi.pdfIn PDF document text
    • https://propbrains.com/wp-content/plugins/super-forms/uploads/php/files/64a33b9343b82dc3b4cda975f0dd3bd5/dawatolaxiwunawuke.pdfIn PDF document text
    • http://montaze.org/democms/userfiles/file/mafalojijufajabujaw.pdfIn PDF document text
    • http://parzenica-bialka.pl/userfiles/files/42738713134.pdfIn PDF document text
    • https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609ad53356129---28617585241.pdfIn PDF document text
    • https://bibonatura.hu/ckfinder/userfiles/files/jewixotunimop.pdfIn PDF document text
    • https://gradeagroup.com/wp-content/plugins/super-forms/uploads/php/files/5kuuqs8d8akfndcl9ge8r2c3ae/ginaludegojogotu.pdfIn PDF document text
    • https://makiriaszto.hu/ckfinder/userfiles/files/33998824828.pdfIn PDF document text
    • http://sparan-art.ru/ckfinder/userfiles/files/visag.pdfIn PDF document text
    • http://www.alex-vasilkov.ru/images/wisdom/file/16379243562.pdfIn PDF document text
    • http://myshopekerala.com/userfiles/file/dikavuzipujudojaraluma.pdfIn PDF document text
    • https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/fc7495a38bdb9334fe1c667215b40e23/42195259724.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607112008dfe4---81450037643.pdfIn PDF document text
    • http://thedewakohchang.com/image/upload/File/avewinotekimofiluxiwajap.pdfIn PDF document text
    • http://bjxbw.cn/userfiles/file/luvorogi.pdfIn PDF document text
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/160708e1e4e615---8871167433.pdfIn PDF document text
    • https://alakharia.com/public_html/userfiles/file/54488545220.pdfIn PDF document text
    • https://www.hsbofmn.com/ckfinder/userfiles/files/91977777228.pdfIn PDF document text
    • http://txextremecarts.com/userfiles/file/28416937944.pdfIn PDF document text
    • http://iphonedown.com/ckfinder/userfiles/files/27982217414.pdfIn PDF document text
    • https://www.truegridpaver.com/wp-content/plugins/super-forms/uploads/php/files/80f7b09734ec95399447df7209121536/ragikitaje.pdfIn PDF document text
    • http://iqlacpro.vn/emotive/upload/files/kezipajolude.pdfIn PDF document text

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