Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce01a8bb45ce8756…

MALICIOUS

PDF

64.9 KB Created: 2020-12-19 23:40:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 2a1ead0726a13d2deae1a965c40c9e11 SHA-1: bb746d41d852fe79cd3300fe98fef82cc327fc31 SHA-256: ce01a8bb45ce87569c4d0dd32eb19c7998b49af826f756eaf0bbd80f9e5dac08
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that directs to a suspicious domain, identified by ClamAV as a phishing trojan. The document body, though heavily obfuscated, appears to be related to the URL's search query, suggesting a social engineering lure. The ML classifier and ClamAV detection strongly indicate malicious intent.

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://trafffe.ru/123?utm_term=skyrim+religion+mod+reddit PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4471704/normal_5faa5aa4b0db0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424982/normal_5fcf4649c9cfd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366042/normal_5fb7a2f9d65b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453741/normal_5fb8bf2ead29e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428054/normal_5fb5a81bec8fc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/waxegatulo/vofofeno.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/anemia_ferropenica_dieta.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/16036304326.pdfIn PDF document text
    • https://s3.amazonaws.com/lurutopobi/zasaxikumaja.pdfIn PDF document text
    • https://s3.amazonaws.com/bunobu/nikowulipebasoseduliwat.pdfIn PDF document text
    • https://s3.amazonaws.com/potamotaz/9060525696.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/att_u_verse_guide_cnn.pdfIn PDF document text
    • https://s3.amazonaws.com/poresi/8_cube_organizer_ikea.pdfIn PDF document text
    • https://s3.amazonaws.com/sorapobuk/76708409483.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b628.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB628 4812 bytes
SHA-256: 2f9708d235ee161f8d73acdf42503e28f14a978ff2a82105035c51d7a7f8a4a2
font_01_sfnt_off0000c66d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC66D 10068 bytes
SHA-256: 8001d3f505c615f82b72321217d28b47c02bfff919375538eecf6c138526bae0
font_02_sfnt_off0000e8db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8DB 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176