Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fc96891caba202c…

MALICIOUS

PDF

51.2 KB Created: 2021-09-10 13:11:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: aa7f0ce3ff12b32398d801f1393168fd SHA-1: e07f37a09e968730f31d920d15ecfc2c5e878bd3 SHA-256: 2fc96891caba202c4456a47b9e9b2d41f3e64485cfb9dd2e4b9f828499d165e1
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, many of which point to suspicious domains and are structured as link farms, suggesting a phishing or malware distribution campaign. The presence of PDF-specific heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6986

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 http://phatnang.com/media/ftp/file/32078238262.pdf In PDF document text
    • http://jingyitech.com/uploadfile/74387010535.pdfIn PDF document text
    • https://bokaichenyu.com/upload/files/simiwajuvubeporakegubux.pdfIn PDF document text
    • https://dolmalatrek.com/userfiles/file/fipusabutivusite.pdfIn PDF document text
    • https://peoplesmodelinternational.com/ckfinder/userfiles/files/mutelimofadesalipanu.pdfIn PDF document text
    • https://hkfew.org.hk/ckfinder/userfiles/files/74980847030.pdfIn PDF document text
    • http://dubilex.com/userfiles/files/tibolaj.pdfIn PDF document text
    • https://xn----8sbcehyodmtf1czh.xn--p1ai/userfiles/file/27209878340.pdfIn PDF document text
    • http://elskup.pl/images/assets/file/vegarijesiwu.pdfIn PDF document text
    • https://poojaindiangrill.com/nbloom/fckuploads/file/nabapajusidu.pdfIn PDF document text
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135dca6484cc---84742741018.pdfIn PDF document text
    • http://xn--80aer5aza.xn--19-kmcm3c.xn--p1ai/ckfinder/userfiles/files/wewikolaga.pdfIn PDF document text
    • http://pro-group.ru/userfiles/files/36195811973.pdfIn PDF document text
    • http://www.jindatunnel.com/up_files/file/18633223878.pdfIn PDF document text
    • http://serbanindustrialconstruct.ro/uploads/files/kufawidopupob.pdfIn PDF document text
    • http://gt-outillages.fr/ressource/site-image/files/59351562760.pdfIn PDF document text
    • https://stmpallet.com/ckfinder/userfiles/files/72327523888.pdfIn PDF document text
    • http://xn----8sbaqfskngn1qi.xn--p1ai/userfiles/file/mowawonotumok.pdfIn PDF document text
    • https://yifff.se/userfiles/file/japobaboke.pdfIn PDF document text
    • http://sinsg.com/files/fckeditor/file/42923093299.pdfIn PDF document text
    • https://cambodiadriverservice.com/userfiles/file/debozubob.pdfIn PDF document text
    • http://amsuatrust.org/survey/userfiles/files/7704848938.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=set+text+message+sound+androidPDF link annotation

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