Malicious PDF — malware analysis report

Static analysis result for SHA-256 05c6fd242e54502e…

MALICIOUS

PDF

71.0 KB Created: 2020-11-16 23:58:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 5d4811f552e1aa2712d03658a0b769bf SHA-1: 91143bb7e538efe2cb42365f12db7089e2d65e88 SHA-256: 05c6fd242e54502e67835f25b44f6cb2374d2ec0598a7b9da5430cb40df9e5af
96 Risk Score

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://trafffi.ru/123?utm_term=future+passive+periphrastic+latin PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4406785/normal_5faad3f1d5343.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413713/normal_5faa09d77de7f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fa27b5a-6459-407f-904a-8f577fb94e2f/dungeon_quest_all_spells.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/how_to_use_multimeter_free.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/nupanitovegapu.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/54260123279.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa534360-c08a-45c7-95d2-9502083c8c27/wazajogam.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/mathswatch_interactive_questions_answers_vectors.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65f8f600-100b-4c69-9709-4919474c2b4b/beko_oven_qim223x_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/d_d_adventurers_league_log_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/batoragubukepo/36844250724.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4ac207b-e492-4615-9bf7-c29755085ad5/call_of_duty_mobile_aimbot_apk_ios.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ca92eb0-0ca3-41f5-b19e-65e9b7589319/vobow.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/60790799270.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_off0000d5d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5D2 5036 bytes
SHA-256: d09ca66e5226cf1c05ed15e865faeb021700e2da7955afcb6308185c70eb92b9
font_01_sfnt_off0000e6f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6F7 12208 bytes
SHA-256: 5ec7edd1ce6cb16fce01026e6a812264910aa14039c7441ec7afaeb23f25fb94