Malicious PDF — malware analysis report

Static analysis result for SHA-256 8224e00a24426922…

MALICIOUS

PDF

60.1 KB Created: 2021-09-21 06:28:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: ad1404cd4d38670b42c4152ae7c53449 SHA-1: 221be3f86e009c8940ff830a1afb5f3d9ad9ef9e SHA-256: 8224e00a2442692270a0c5be8e35fabc543415605421b28416b606f5eee1112c
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to various domains, indicating a link farm designed to redirect users. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically flags this behavior, suggesting an attempt to obscure the ultimate destination or distribute malicious content. The ClamAV detection and ML classifier further confirm its malicious nature, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5048

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://infrive.ru/uplcv?utm_term=bad+piggies+apk PDF link annotation
    • https://shevtsov-art.com/uploads/files/33931398535.pdfIn PDF document text
    • http://modamoda.nl/uploads/pic_lib/file/39078935042.pdfIn PDF document text
    • http://www.saaegfpolis.org.br/ckfinder/userfiles/files/78052875068.pdfIn PDF document text
    • http://www.southforconstruction.com/frontend/web/ckfinder/userfiles/files/zibudebotesolovemugexora.pdfIn PDF document text
    • http://foodexgida.com/uploads/files/jutakoger.pdfIn PDF document text
    • https://clickbox.ro/images/file/43705080959.pdfIn PDF document text
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16148782f38461---44749076862.pdfIn PDF document text
    • http://noxsun.com/jingkelun/userfiles/files/20210906225656.pdfIn PDF document text
    • http://kamienneogrody.com/userfiles/file/21725547055.pdfIn PDF document text
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c12d5c6bcb---10825169385.pdfIn PDF document text
    • https://barcelonacentremedic.cat/files/galeria/files/17249275192.pdfIn PDF document text
    • https://www.seblocation.com/ckfinder/userfiles/files/kipeg.pdfIn PDF document text
    • http://bloodfaces.de/attachment/file/jezamejosadununevom.pdfIn PDF document text
    • https://mobilaide.com/upload/editor/file/tevivope.pdfIn PDF document text
    • http://www.vlaamspatientenplatform.be/_plugin/ckfinder/userfiles/files/53875968533.pdfIn PDF document text
    • http://delve-cr.com/uploads/pupufalebegitaluxus.pdfIn PDF document text
    • https://www.antoniopopolizio.it/ckfinder/userfiles/files/87612262348.pdfIn PDF document text
    • https://itscebu.com/upload/file/20210910092356.pdfIn PDF document text
    • http://unitec-egypt.net/userfiles/file/xotumunesirador.pdfIn PDF document text
    • http://spbi.cz/res/file/jitelor.pdfIn PDF document text
    • https://hse.tw/upload/file/fabel.pdfIn PDF document text
    • http://birkhoffhi.com/userfiles/files/gapefuzizosivexabapan.pdfIn PDF document text
    • http://www.cafeinca.com/img/public/contenido/file/18753603059.pdfIn PDF document text
    • http://deepakbatteries.com/uploads/file/kipopusejiwasuxab.pdfIn PDF document text