Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0003b56c3019d71…

MALICIOUS

PDF

84.5 KB Created: 2021-02-22 19:48:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 822ea92fac96a50b74a913785c60752b SHA-1: 8c0abe4161b66521bd128276a1901fdda5d243c4 SHA-256: c0003b56c3019d714b71540b97e959cdc0454c2fc24326bfb38cc993580423d8
96 Risk Score

Malware Insights

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

The file is identified as malicious by a ClamAV signature and an ML classifier, indicating it's a phishing or trojan PDF. The embedded URL points to a suspicious domain, likely serving as a lure for malicious content. Although no scripts were explicitly extracted, the PDF structure and heuristic firings suggest an attempt to exploit the user's trust through a deceptive document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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/aws?utm_term=tc+electronic+hall+of+fame+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4379844/normal_6009029069089.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409818/normal_6002a7b2ad6a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419413/normal_6014026bb1a0f.pdfIn PDF document text
    • https://cdn.sqhk.co/rovonoset/bf5KNbT/57592386547.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412377/normal_5fe811b16ef20.pdfIn PDF document text
    • https://cdn.sqhk.co/pavoraxebute/jkOYiej/woregikekesug.pdfIn PDF document text
    • http://grizhoff.ru/588255115009l736.pdfIn PDF document text
    • http://canlisohbetim.net/74028816198ouncu.pdfIn PDF document text
    • https://cdn.sqhk.co/ranemagesoga/SXijabX/coupon_scanner_device.pdfIn PDF document text
    • https://cdn.sqhk.co/xarozowuzosa/fhchd6F/76110885087.pdfIn PDF document text
    • http://digitalmedialit.com/football_linebacker_workout_routine69mct.pdfIn PDF document text
    • http://kinoxca.xyz/if_clause_zero_exerciseoduyh.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vebenok/1890411904.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/44924176060.pdfIn PDF document text
    • https://s3.amazonaws.com/fajixe/23273997326.pdfIn PDF document text
    • https://s3.amazonaws.com/mivokozibu/nemefulazovagilin.pdfIn PDF document text
    • https://s3.amazonaws.com/runuzitexokol/yalghaar_borderclash_glorious_mission_army_game.pdfIn PDF document text
    • https://s3.amazonaws.com/mivokozibu/centaur_media_plc_annual_report_2017.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000107c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107C8 4892 bytes
SHA-256: 3622e3e3d129f0901b85edde6844f0457c277033e32aacbb20fc913713376850
font_01_sfnt_off00011842.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11842 13196 bytes
SHA-256: cc3668d81aacc792dc854fc907bad9227ba29027c03a0c3d7e967157dfc8101d

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