Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d598bf289003c0a…

MALICIOUS

PDF

62.8 KB Created: 2021-09-13 08:54:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 4f558474261668adadf9867d8c029c99 SHA-1: 3b26424e9bce743c8462538bf2fe5da25e1e313e SHA-256: 7d598bf289003c0a2337a53ae22e49dc7634a7079fb83a1cbdb77c62fd6fa7e6
94 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and exhibits characteristics of a link farm, with numerous URLs pointing to disposable domains. The PDF structure and embedded URIs suggest an attempt to redirect users to potentially malicious content, likely for phishing or malware delivery. No scripts were extracted, and the document body was unreadable, limiting further analysis of specific user interaction goals.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4211

Heuristics 4

  • 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 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://smidgel.ru/uplcv?utm_term=what+is+meaning+of+rooted+phone PDF link annotation
    • https://artbynela.com/uploads/file/sutijesas.pdfIn PDF document text
    • https://rajatotogroup1.com/contents/files/dufasetakebamixipojino.pdfIn PDF document text
    • https://grandegroup.net/files/sewedu.pdfIn PDF document text
    • http://sergeisurzhin.ru/ckfinder/userfiles/files/97588207759.pdfIn PDF document text
    • https://petrovsky14.ru/docs/files/rozadizuxode.pdfIn PDF document text
    • http://songpinhao.com/userfiles/files/89638758839.pdfIn PDF document text
    • https://network-italia.it/file/27736089212.pdfIn PDF document text
    • https://xn--bren-mgenwil-gcbf.ch/sites/default/files/fck-uploads/file/90121431855.pdfIn PDF document text
    • http://abwmarlboropike.com/uploads/files/90445768065.pdfIn PDF document text
    • http://goref.ru/files/file/74340615603.pdfIn PDF document text
    • http://oio.cn/uploadfiles/files/laxuv.pdfIn PDF document text
    • https://tahitotfalu.hu/ckfinder/userfiles/files/55957885028.pdfIn PDF document text
    • http://detaycopymatbaa.com/userfiles/file/muluvedugadiwi.pdfIn PDF document text
    • http://ottomaniantextile.com/userfiles/file/35762136484.pdfIn PDF document text
    • http://chafewyuok.handysociality.com/upload/files/bixubiwubuwod.pdfIn PDF document text
    • http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613115a2248dd---14332154235.pdfIn PDF document text
    • http://jonme.net/ckupload/files/72891407475.pdfIn PDF document text
    • http://nexxosrealty.com/userfiles/files/jetofulaperigapugi.pdfIn PDF document text
    • http://webinaris.blog/ckfinder/userfiles/publics/files/vekomupedovitoworalewurug.pdfIn PDF document text
    • http://jin16888.com/userfiles/file/gixidubonose.pdfIn PDF document text
    • http://phongkhamthienhoa.org/images/files/13327300862.pdfIn PDF document text
    • http://rockhousemethod.com/ckfinder/userfiles/files/jolowojutejuvotakonezuz.pdfIn PDF document text
    • http://szyldkj.com/luodan/images/userfiles/file/zesenifizix.pdfIn PDF document text
    • http://spartaksedlec.cz/spartaksedlec/userfiles/file/14256121371.pdfIn PDF document text
    • http://anshan56.cn/userfiles/file/16311623181580063485.pdfIn PDF document text