Malicious PDF — malware analysis report

Static analysis result for SHA-256 ceabaad142b95631…

MALICIOUS

PDF

56.3 KB Created: 2020-12-19 18:17:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d0ae0a2dbbe2455524c0599729051452 SHA-1: 1ec0466bbcccc9840d25dbb353221967d0a95032 SHA-256: ceabaad142b956315d9a1b6c5b1bb0bfabf2d771ca53e5fbea6bed41570b9e82
154 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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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/123?utm_term=walking+dead+mod+apk+unlimited+money In PDF document text
    • https://cdn-cms.f-static.net/uploads/4489979/normal_5fd84e6a17ee1.pdfIn PDF document text
    • https://wosefekolejareb.weebly.com/uploads/1/3/4/3/134340916/ragibaluxi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417818/normal_5fa10ec183cca.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380869/normal_5fcd23d48b748.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466175/normal_5fde1b73adf3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382429/normal_5fd990711ed5d.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/nopomewegobij/64510633688.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0e47d5e-bd78-44aa-a282-d6a384a5a18c/college_algebra_study_guide_with_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ff58339-d7ca-4481-acdf-e66742ccbe84/cassandra_jdbc_driver.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_off0000a224.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA224 5184 bytes
SHA-256: 2fd42b9f1021a414202e5aa804ea48eee8edb6fc9898acb60ff818c327296fa3
font_01_sfnt_off0000b3d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3D1 9608 bytes
SHA-256: fa097ab15e7ad57a373850f7eea2c133590cb307385dfac9f905058294b1a46e