Malicious PDF — malware analysis report

Static analysis result for SHA-256 854e884f424a6123…

MALICIOUS

PDF

63.6 KB Created: 2021-10-08 15:02:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 7fde9fafa898e2ac456af85b8052ffed SHA-1: f57220e87688b2798e8d9a06b1db0b94d65a462e SHA-256: 854e884f424a612352130c917ad20076756d6e50fbba92a07e1e2be957582d6a
124 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which are hosted on disposable domains, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier flagging strongly suggest malicious intent, likely for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and numerous external URIs are indicative of malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6403

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://coretry.ru/uplcv?utm_term=africa+twin+automatic+transmission PDF link annotation
    • http://bbdecontra.com/userfiles/files/busokatif.pdfIn PDF document text
    • https://livewireeventz.com/userfiles/file/13112350268.pdfIn PDF document text
    • https://xaydungdonggia.com/app/webroot/files/images/pages/files/sigifuvoparike.pdfIn PDF document text
    • https://rodolphe-blanchet.fr/Rodolphe/fckeditor/file/51215066907.pdfIn PDF document text
    • http://wang023spa.com/userfiles/202109file/2021090508531770554.pdfIn PDF document text
    • http://xn----7sbbbizu2bxaod.xn--p1ai/userfiles/file/14584612617.pdfIn PDF document text
    • https://krantiservice.com/ckfinder/userfiles/files/pudufa.pdfIn PDF document text
    • http://progettogeometra.it/userfiles/files/sexekijuninuji.pdfIn PDF document text
    • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/eb5e24e1aa82d9e1889df1ad6d3b7754/19983532528.pdfIn PDF document text
    • https://innotek.vn/uploads/news_file/sutikike.pdfIn PDF document text
    • https://sergiomauri.com/images/file/naxufumizimos.pdfIn PDF document text
    • https://delaneyllc.cfonewsletter.com/ckfinder/userfiles/files/36679928183.pdfIn PDF document text
    • http://acmemask.com/upfiles/editor/files/zitadubajezoladimomesi.pdfIn PDF document text
    • http://speckrepej.com/upload/file/67813438657.pdfIn PDF document text
    • https://demoliman-host168-com.twbiz.me/data/html_editor/files/fifominafad.pdfIn PDF document text
    • http://sangtaoad.com/uploads/userfiles/file/77444580937.pdfIn PDF document text
    • http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/tn60lb0avp4rtvdpe329r23ll8/35194575492.pdfIn PDF document text
    • http://aminotp.com/upload/files/junuzigifixarekego.pdfIn PDF document text
    • https://www.antoniopopolizio.it/ckfinder/userfiles/files/zowubidok.pdfIn PDF document text
    • https://alpinebadmintonacademy.com/ckfinder/userfiles/files/45916035031.pdfIn PDF document text
    • https://aymexco.ro/ckfinder/userfiles/files/pogufijifisegal.pdfIn PDF document text
    • http://innovatepc.com/userfiles/file/34457606764.pdfIn PDF document text
    • http://nemochem.cn/upload/files/kivabubimigajiditi.pdfIn PDF document text
    • http://www.heksan.com.pl/file/98018794084.pdfIn PDF document text
    • https://karlschool.org/uploads/files/202109241852128806.pdfIn PDF document text

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