Malicious PDF — malware analysis report

Static analysis result for SHA-256 abd70bd491700118…

MALICIOUS

PDF

111.5 KB Created: 2021-06-14 05:08:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 48661c3dbd1b3de9ff4b0421eb7ae363 SHA-1: d2a18b1d9428c37d933618de5a0ffa37236c8623 SHA-256: abd70bd49170011809ba4fff9c7dfdabceecb933827a2bbd693f713def5c307c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links pointing to compromised WordPress upload directories and disposable hosting, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing lures for software downloads. No scripts were extracted from this sample, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9456

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://crysiq.ru/uplcv?utm_term=autocad+360+pro+apk PDF link annotation
    • http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609106496514e---37419785726.pdfIn PDF document text
    • https://desertflying.club/wp-content/plugins/formcraft/file-upload/server/content/files/16084a3858e94c---20343931647.pdfIn PDF document text
    • http://przychodnia-felinskiego.pl/uploads/editor/file/84652237368.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/rhnujf3amf4oumena1u7l6mrjr/fufowujumi.pdfIn PDF document text
    • http://stkvn.ru/wp-content/plugins/super-forms/uploads/php/files/2adaab8fbc28671cd99c9739450f931c/65200396774.pdfIn PDF document text
    • https://www.synergyheart2heart.team/wp-content/plugins/super-forms/uploads/php/files/q9rq87q0ep074hpk26gtkkbt1g/31770282783.pdfIn PDF document text
    • http://alpha-th.com/userfiles/file/wisok.pdfIn PDF document text
    • http://sanarina.de/ckfinder/userfiles/files/23454092947.pdfIn PDF document text
    • http://autoshiftbid.com/fckeditor/userfiles/file/25115079861.pdfIn PDF document text
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16094ca213a0a3---kofegiziwusup.pdfIn PDF document text
    • http://pinzimoniofiumicino.eu/userfiles/files/lewumikisuxigudux.pdfIn PDF document text
    • https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079ac4c6e95e---60907007541.pdfIn PDF document text
    • https://ilcaminodaugo.it/file/15264303706.pdfIn PDF document text
    • http://sooclose.eu/upload/File/19832523949.pdfIn PDF document text
    • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079b3a91c16c---95681389903.pdfIn PDF document text
    • https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/u2rn30ooh7cm3h9oh5ccl5hfv3/pedajubujaj.pdfIn PDF document text

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