Malicious PDF — malware analysis report

Static analysis result for SHA-256 464d8367775ada7e…

MALICIOUS

PDF

48.4 KB Created: 2021-09-30 15:21:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a6009b6c3ffaaecef0e0ab06590a45b0 SHA-1: f0fb5520b3f03630ba0de67d30a4c92b01727d0f SHA-256: 464d8367775ada7e15ef8b093687a401fed962080829d8c68ba136e8794bf8eb
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to disposable domains, a common tactic for phishing or distributing malware. The 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic indicates a deliberate attempt to create a link farm, and the ML classifier and ClamAV detection confirm malicious intent. No scripts were extracted, but the structure suggests the PDF itself is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5962

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://queure.ru/uplcv?utm_term=t95z+plus+rom
    • https://oxfordjsr.com/userfiles/file/belulatemaw.pdf
    • http://tochuchoinghi.org/files/84774853097.pdf
    • https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614f30f028926---91446313714.pdf
    • http://www.sport-konyv.hu/userfiles/file/dinos.pdf
    • http://spl-designs.com/ckfinder/userfiles/files/bilib.pdf
    • http://tuvanthanhlapcongty.biz/upload/ck/files/fifuzamufezijipafebox.pdf
    • http://wwpokebar.com/uploads/files/48218583981.pdf
    • https://latework.cz/soubory/varosifimiwomovafo.pdf
    • http://mariekevanvlierden.nl/survey/userfiles/files/24885556219.pdf
    • http://cameranichietsu.com/luutru/files/ladewikasufoxuzefebigi.pdf
    • http://namlinhchivietnam.net/userfiles/image/file/38313828238.pdf
    • http://homeshopeez.com/uploaded_files/userfiles/files/83371403050.pdf
    • http://tsnpharma.com/upload/files/74321134653.pdf
    • https://cdmsig1.com/ckfinder/userfiles/files/vakuwebujile.pdf
    • https://kheops-so.fr/ckfinder/userfiles/files/91136742454.pdf
    • http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c15ac6200d---13930397124.pdf
    • http://ltptech.vn/uploads/userfiles/file/wexibutesoterotuke.pdf
    • https://konteshamamotu.com/userfiles/file/lusibojane.pdf
    • https://piphoto.tw/uploads/files/202109082259569989.pdf
    • http://cukorbetegshop.hu/files/vijimonexijukanuni.pdf
    • https://qian-ho.com/upfiles/editor/files/40743833028.pdf
    • https://sherwoodchamber.org/ckfinder/userfiles/files/46648573963.pdf
    • http://seoulsquare.com/userfiles/file/76264732836.pdf

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