Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7bbbbe83f7eb366…

MALICIOUS

PDF

78.5 KB Created: 2021-02-06 01:30:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: c651c2fc1c2f210f1a55fa75a4617ee4 SHA-1: e5d24a1709a3af1460146861407d2512a8a33f54 SHA-256: c7bbbbe83f7eb36630429a285755b48748a13176ade40504b90387fa7ae54685
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to exploit users by luring them to a malicious site.

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://leonvi.ru/123?utm_term=keto+max+burn+shark+tank PDF link annotation
    • https://cdn.sqhk.co/rokabumake/gi98Tgg/10187715984.pdfIn PDF document text
    • https://cdn.sqhk.co/devisofage/9cLlEr5/96406912243.pdfIn PDF document text
    • https://cdn.sqhk.co/tavikebepo/F1ywgjp/kim_kardashian_hollywood_game_hack_apk.pdfIn PDF document text
    • http://pavezala.iblogger.org/fipekaruvizaja.pdfIn PDF document text
    • https://cdn.sqhk.co/reposivekow/cjcgfFM/uk_merger_control_gun_jumping.pdfIn PDF document text
    • https://cdn.sqhk.co/zotofoza/EieJhPS/stickman_full_destruction_stickman_running_game.pdfIn PDF document text
    • https://cdn.sqhk.co/renonidofel/GQ3Xnjj/falling_action_example_sentence.pdfIn PDF document text
    • https://cdn.sqhk.co/vebudirepo/chgiagc/lozigobumuvelano.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/sasufufa/best_photo_for_whatsapp_dp.pdfIn PDF document text
    • https://s3.amazonaws.com/desenaz/geometric_patterns_math_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/pigolo/random_email_generator_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/nakuzafol/50972701847.pdfIn PDF document text
    • https://s3.amazonaws.com/pujinit/53194547453.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/information_architecture_web_template.pdfIn PDF document text
    • https://s3.amazonaws.com/kegubinefuda/28521519872.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxirefare/64498865788.pdfIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/full_screen_video_songs_free.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_off0000f4b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4B5 5136 bytes
SHA-256: 4d0fbd52bc8dfb8316479b097ab03a2d4707b14ea52fab4a4f4e80052cd89955
font_01_sfnt_off000105f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105F8 11444 bytes
SHA-256: 03ff98bb09e8bb7f62705613bc95f64b64dd2ecfad542ae7272e26fce3e1c22c

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