Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e46ef3aa146f44f…

MALICIOUS

PDF

72.4 KB Created: 2021-01-09 05:10:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 8adbfac65c34379dec6669a4cbb26d93 SHA-1: ed62e803df0b3eb35f2b445d71a8dc16896b41a2 SHA-256: 2e46ef3aa146f44f9d821274d18d19389aa745ec6ca4de96b9d7412bea81cb64
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were directly extracted, the PDF structure and embedded URI heuristic suggest an attempt to exploit users through a malicious link, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffking.ru/123?utm_term=eso+master+writs+alchemy PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413118/normal_5fa0f9f62cd3e.pdfIn PDF document text
    • https://cdn.sqhk.co/siwemawatu/WjagcxE/earn_to_die_10000.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371814/normal_5fcd9fd867c4f.pdfIn PDF document text
    • https://cdn.sqhk.co/wixefawoz/dvih3Ky/ferumamimuvidunula.pdfIn PDF document text
    • https://cdn.sqhk.co/sezogitov/04jgEge/43228684309.pdfIn PDF document text
    • https://cdn.sqhk.co/kewusikata/iEggVgx/fapagijogodetepisajigi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420240/normal_5ff0deb3d5ba7.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/pazatuv/kataruroxusifiziw.pdfIn PDF document text
    • https://s3.amazonaws.com/gonima/75965271833.pdfIn PDF document text
    • https://s3.amazonaws.com/tokudapele/hindu_marriage_certificate_format_india.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/download_appeal_form.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezodepugov/escardio_guidelines_acute_myocardial_infarction.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/metro_exodus_wiki_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/bubeto/section_14.2_work_and_machines_answer_key.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_off0000df5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF5E 5188 bytes
SHA-256: f8177c948d4c0e753d338eb75ae094b54853089b40030a9cce85d8c865fae66a
font_01_sfnt_off0000f0eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0EB 10716 bytes
SHA-256: 2f30e973b7ce22d4d18ff2eb0fbf0b76c156eb591567000a8dea2b5543db1405