Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbc99a4f3b2dbd19…

MALICIOUS

PDF

72.8 KB Created: 2020-12-31 05:33:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 743a679d33eb601420e0eb3f980cba89 SHA-1: d9e13deabb4e8f71f0fe2a1c3bdc06723143a69c SHA-256: fbc99a4f3b2dbd197a90b21af84440a6057ca52018a94d69b80224ef760426ec
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-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://trafficel.ru/strik?utm_term=movie+editor+for+windows+7+free PDF link annotation
    • https://cdn.sqhk.co/gototovubuwi/HchdMpk/awesome_pocket_rocket_piggy_bank.pdfIn PDF document text
    • https://cdn.sqhk.co/pegidago/gduhbhb/78199685969.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498986/normal_5fad2b51b1638.pdfIn PDF document text
    • https://cdn.sqhk.co/nukuzulu/fgcPjgc/interstellar_cast_tars.pdfIn PDF document text
    • https://cdn.sqhk.co/lunapolakezo/RhbhiUl/xipanavotip.pdfIn PDF document text
    • https://cdn.sqhk.co/suwapipejob/oPhejgZ/playstation_app_pc_chat.pdfIn PDF document text
    • https://cdn.sqhk.co/zururodi/hhdifSk/63485487510.pdfIn PDF document text
    • https://cdn.sqhk.co/zenetofuma/jdFgdi7/easy_ice_cream_recipes_for_machine.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411503/normal_5f93e8ce94568.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465403/normal_5fa321eceb57b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408176/normal_5fe8d5a9d70d4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404123/normal_5fc8a1de00d9c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366647/normal_5fe3bf5d611f8.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/sigobija/chess_master_app_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/26640715933.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/soliman_s_auricular_therapy_textbook.pdfIn PDF document text
    • https://s3.amazonaws.com/wizedumi/food_label_template_word_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_off0000e0b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0B4 4896 bytes
SHA-256: 6cd8aea6663a323373a12c5e0a9f41dc51f0982a437c603367184897a541711c
font_01_sfnt_off0000f196.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF196 10692 bytes
SHA-256: 128ff2e8c40d1031a06a4108f2b12bc24149c1f3a4ae44472223038d9c42a01c

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