Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f82062362c4e31c…

MALICIOUS

PDF

76.2 KB Created: 2020-12-14 15:29:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 2dee80126f58dabb744ece77b18ca584 SHA-1: 73585e25a8bc9e5a424061ca0b85e741ff6c4234 SHA-256: 2f82062362c4e31ca7f22b7e2b1af005c65873155b4bf9aec24eb8035f870066
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/aws?utm_term=congenital+venous+malformation'. ClamAV also detected it as 'Pdf.Phishing.Trojan'. The embedded document body text is heavily obfuscated and unreadable, but the presence of a malicious URL strongly suggests a phishing or malware delivery attempt, likely initiated via spearphishing attachment.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/aws?utm_term=congenital+venous+malformation In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lemefofutomapox/xiwoletegififajojukuko.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzakifezara/nimelefuzezewekoxowo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f32ae27b-f11e-411f-abf5-6251074d92bb/54050425396.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/articles_worksheet_for_grade_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ac18b2e-f19f-405b-9d81-f07c50c9a540/37706485102.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/nikon_d80_manual_download.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/infix_to_prefix_in_java.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/70554712034.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69665323-3d9d-481c-836b-bbb179f1bc0e/bamboo_floor_matt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d8461d5-2447-4281-b331-b8bf599ea835/puvifixedekijiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d718636-d5fc-47ce-8675-b50f959ba5dc/pokemon_black_and_white_emulator.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_off0000edaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDAA 5052 bytes
SHA-256: 880960b26fa4e927a4dc5d48f1c6db59ccfba5a3e87261f76d1f9abd672f8919
font_01_sfnt_off0000fecc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFECC 11164 bytes
SHA-256: 7cdd2acc8b045cee4522bdfc08fcc4c030dc6bd480ce6e8f47a180d869db2c3b

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