Malicious PDF — malware analysis report

Static analysis result for SHA-256 76b60600b6992de4…

MALICIOUS

PDF

82.9 KB Created: 2020-12-16 20:44:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a26999913a15bb604f0c2f8aa3bf773c SHA-1: d2aa6bfc0d804e1931fd004779e187b68a3c0d9d SHA-256: 76b60600b6992de44cffce48963cfe04b849b59c6626d0425d8e59e183f3a2a0
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that promises free access to a movie, a common lure for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to redirect the user to a malicious site.

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/123?utm_term=watch+midsommar+free+online+full+movie
    • https://cdn-cms.f-static.net/uploads/4448126/normal_5fa618f3a2722.pdf
    • https://cdn-cms.f-static.net/uploads/4412161/normal_5fa609435e1c4.pdf
    • https://static.s123-cdn-static.com/uploads/4470696/normal_5fc58be351733.pdf
    • https://static.s123-cdn-static.com/uploads/4428043/normal_5fccab423b9f8.pdf
    • https://cdn-cms.f-static.net/uploads/4366630/normal_5f8789067c674.pdf
    • https://cdn-cms.f-static.net/uploads/4367622/normal_5f8e017dc6184.pdf
    • https://static.s123-cdn-static.com/uploads/4460688/normal_5fc7cfc60a59d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/divexikav/wufunipuf.pdf
    • https://s3.amazonaws.com/mesotodimus/agrifirm_annual_report_2015.pdf
    • https://s3.amazonaws.com/legesiliv/steam_background_while_playing_game.pdf
    • https://s3.amazonaws.com/pazifetanegapu/werukilisomakuwiv.pdf
    • https://uploads.strikinglycdn.com/files/81cdaac3-e18a-4b30-b190-acbec8002f29/university_of_minnesota_electrical_engineering_graduate_admission.pdf
    • https://s3.amazonaws.com/posufij/battlefield_bad_company_2_android_requirements.pdf
    • https://s3.amazonaws.com/dapekufoxiraku/old_english_literature_quiz_questions_and_answers.pdf
    • https://s3.amazonaws.com/paxivogedewilu/preparing_trial_balance.pdf
    • https://s3.amazonaws.com/viboxikuz/17043876822.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010848.bin
1a3f568ef9b55688fd0f913cb4bd8db7a3987bf6f9cf897bd2d47370ab520f38
pdf-font-stream PDF embedded font (sfnt) at offset 0x10848 5336 bytes
font_01_sfnt_off00011a4c.bin
def9327728cb61f990d91b37dbd47623c23ddd0f07d2a102f5ed5083ab1136b7
pdf-font-stream PDF embedded font (sfnt) at offset 0x11A4C 10664 bytes