Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9a69ca08e3d5e48…

MALICIOUS

PDF

52.3 KB Created: 2021-09-02 12:09:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: cc5a613c17920e1a68d00205aa98714a SHA-1: 53121c5f13266704200997c706f4d40ed108d818 SHA-256: f9a69ca08e3d5e48659cbf4b4f6bd636f4ffe5d65c45f1b1ec4b888c00995dc1
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating it is likely a phishing or malware distribution lure. It functions as a link farm, containing numerous URLs pointing to various domains, many of which appear to be compromised or disposable hosting. The presence of multiple links on potentially compromised WordPress sites suggests an attempt to obscure the true destination or leverage existing infrastructure for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8793

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://laborke.ru/uplcv?utm_term=pvc+greenhouse+plans+pdf
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ecd360befb1---2368569672.pdf
    • https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608dde77b2122---62406805794.pdf
    • http://adveotec.com/img/file/81705899452.pdf
    • https://law.myvzl.com/wp-content/plugins/super-forms/uploads/php/files/rh3d8626p8ss1bu2d51i90gck9/68408128634.pdf
    • http://klenderbio.com/upload/files/77206470819.pdf
    • https://sailstudy.in/ckfinder/userfiles/files/makokabusujasunutu.pdf
    • http://nwatchonline.net/userfiles/file/91167098067.pdf
    • http://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8bffce72dc---zokew.pdf
    • http://adams-gold.ru/archive/image/file/ninabopan.pdf
    • https://girisimhaber.com/uploads/file/17920010242.pdf
    • http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609f0def79f6f---luwovonupafixirukemav.pdf
    • http://ctkupavna.ru/upload/file/lerenawami.pdf
    • https://www.indoorclub-informa.com/boletines/img/file/ganikudufepapobidixagi.pdf
    • https://jagominum.com/contents//files/17484842798.pdf
    • https://bataretak.com/img/files/file/90501924810.pdf
    • http://zpb-maciejewski.pl/upload/fck/file/29888830729.pdf
    • http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1609dfc64dfd1f---53634214843.pdf
    • http://csc025.com/userfiles/file/20210707080838_acmu1a.pdf
    • http://elonsummerstorage.com/wp-content/plugins/formcraft/file-upload/server/content/files/160726e20c58ed---sugabugijirolarubiwewij.pdf
    • http://owv-sad.de/userfiles/files/73079338183.pdf
    • http://artechq8.com/beta/uploads/files/8974626115.pdf
    • http://acpiindia.com/userfiles/file/45002373002.pdf
    • https://alexandrapanayotou.com/web/images/static/file/notelapatide.pdf

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