Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d98f2affa3f9576…

MALICIOUS

PDF

58.3 KB Created: 2021-09-12 22:06:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 0b857a3a86655d65119441e885c58267 SHA-1: 263671b72326220ac56c67e85a2d42ba976344d3 SHA-256: 1d98f2affa3f9576fcd16f6942788c4f95520570ee27619a12cdb11a38aaabf0
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to external domains, many of which are associated with link farms and disposable hosting. The ClamAV detection and ML classifier indicate malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the structure suggests a malicious document intended to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5046

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://irlanc.ru/uplcv?utm_term=watch+the+new+mutants+free PDF link annotation
    • https://santa.sg/images/users/00000000/files/79291943704.pdfIn PDF document text
    • http://moscow-vernisage.com/files/files/fetelise.pdfIn PDF document text
    • http://sireny.net/share/files/gagasilotaxufemumaro.pdfIn PDF document text
    • http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133ddd569519---kabenene.pdfIn PDF document text
    • http://steffis-strassladen.de/userfiles/file/putapumuvo.pdfIn PDF document text
    • https://verredistri.fr/xmedia/file/92633564233.pdfIn PDF document text
    • http://sarljarry.com/userfiles/file/pateposuwudazow.pdfIn PDF document text
    • https://pasarant0g3l-turbo-h1t.com/contents/files/babakoganogipakuji.pdfIn PDF document text
    • https://ural-aiti.ru/admin/ckfinder/userfiles/files/26264016303.pdfIn PDF document text
    • https://endobible.com/userfiles/file/bavipuwefagomuj.pdfIn PDF document text
    • https://funcarele.com/ckfinder/userfiles/files/metibodabuw.pdfIn PDF document text
    • http://pmrs.ps/userfiles/file/45554614656.pdfIn PDF document text
    • http://pickup-ws.com/userfiles/files/33246207800.pdfIn PDF document text
    • http://a-pluset.com/userfiles/fosobamutusevulobedixi.pdfIn PDF document text
    • https://sabagdasarov.ru/upload/file/zimuwu.pdfIn PDF document text
    • http://metamorfoza-krosno.pl/userfiles/file/1594643030.pdfIn PDF document text
    • https://maria-galland.ru/files/file/kozokifibizeba.pdfIn PDF document text
    • https://www.frontiermea.com/sites/all/libraries/ckfinder/userfiles/files/71858723021.pdfIn PDF document text
    • https://hashtag.school/userfiles/file/nukalexowovor.pdfIn PDF document text
    • https://tigapilar.com/upload/files/31167559614.pdfIn PDF document text
    • http://ohxto.com/uploaded_files/userfiles/files/9277439771.pdfIn PDF document text
    • http://munnarinfo.in/userfiles/file/22099197684.pdfIn PDF document text
    • http://alkanboya.com/files/file///xekiwozalenupenafax.pdfIn PDF document text
    • http://drsuthichai.com/userfiles/files/wudavobolud.pdfIn PDF document text