Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e86ac8c95e944e3…

MALICIOUS

PDF

82.0 KB Created: 2021-02-18 19:49:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 44595445dd5f90e0b4f6fbe268356384 SHA-1: 92ad9db0094710712a01a06760888daaa2ecc930 SHA-256: 8e86ac8c95e944e334bf3290797ffd8223e12d21d38ccb8004750752c647118b
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://seumenha.ru/wix?keyword=athlean+x+free+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4476758/normal_6028113b90a77.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456135/normal_5feed77ac080a.pdfIn PDF document text
    • http://help-business-media.com/school_bus_demolition_derby4f7lg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447662/normal_602d27be68237.pdfIn PDF document text
    • http://bahis-sikayet.com/dvdvilla_bollywood_movies_2017febg9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4506131/normal_5fe27891868ab.pdfIn PDF document text
    • http://pedrons.space/pekudepimejifitelowitujij23zno.pdfIn PDF document text
    • http://detonic-italy.website/251509728365xl8v.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495244/normal_6024d07b70b97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425005/normal_600b8db37a22c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381738/normal_600f051f268a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449776/normal_602ce8641d5d2.pdfIn PDF document text
    • http://yesnutural.space/gedebanoxujultm740.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zufojadibi/petuleniluk.pdfIn PDF document text
    • https://s3.amazonaws.com/bagokiko/pradeep_chemistry_book_for_class_12.pdfIn PDF document text
    • https://s3.amazonaws.com/metakibeme/wwe_205_live_results_bleacher_report_grades.pdfIn PDF document text
    • https://s3.amazonaws.com/mozedijiz/dupinuzatojipasukapisu.pdfIn PDF document text
    • https://s3.amazonaws.com/vonusirukete/6744189213.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3FC 4640 bytes
SHA-256: 5a2d935cc31a7e9137cb77cc567daad292abf9a6eea1a57dca883e5081fe2518
font_01_sfnt_off000103b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103B0 12716 bytes
SHA-256: 436e36f6f457cc369e73837778fd69a38fd3438a09dc948c286bcd121378ca3f
font_02_sfnt_off00012cbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CBC 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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