Malicious PDF — malware analysis report

Static analysis result for SHA-256 9de8ae838704b6f5…

MALICIOUS

PDF

69.1 KB Created: 2020-12-17 18:57:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: bebd071fbed96bc0fbdb9bb2a3a55cbc SHA-1: d5e4fce32b226303aaca60d6331e87389f21089e SHA-256: 9de8ae838704b6f5c4c04050c00c1a58552eb7c3cad26092a29334fdf3a624ee
96 Risk Score

Malware Insights

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

The file is identified as malicious by a ClamAV detection and an ML classifier. It contains an embedded URI pointing to 'trafftec.ru', which is likely a phishing or malware distribution domain. The document body, though heavily obfuscated, suggests a lure related to a map, aligning with the PDF_URI heuristic.

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://trafftec.ru/123?utm_term=alligator+river+national+wildlife+refuge+map PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4385206/normal_5f9d47a681816.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489429/normal_5fc7331a24d9d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464530/normal_5fd22c9b8fde0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500895/normal_5fcdd337beb34.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc0e1846b97992eb55bfc03/t/5fc104e51972c46e3cc2a07f/1606485227688/dumidalejetirawigitul.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e555f7cf8c75402ae412/t/5fcfaa5664290b1c3de1f6a1/1607445078831/76425703530.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc54070c14dfd36fe0e2b11/t/5fc7ba5dbfb90028be5c890e/1606924893416/wapewiz.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf58ee9d79364840854ace/1606375663625/laterally_supported_beam.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc52571d26ff1194f8f7eca/t/5fd634cdb1c3f31c7a7b509e/1607873741690/easily_annoyed_crossword_answer.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc531585bcb0228a29e8486/t/5fc85c7790a4f8549d76228a/1606966391742/nemofigovetenatu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1b24012facd59ceb28ac7/t/5fc7d7078927470b95c8c834/1606932232475/kiwosofataparewute.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9083776-032f-441d-9d73-9cd38349ac45/78672864520.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dd9b8ef7301f8b108504/t/5fc139487acac6192aed47ab/1606498632358/general_graardor_osrs_duo_guide.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_off0000d195.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD195 5324 bytes
SHA-256: f16d7e6215600c003f420b477589d5e1eca9dd25a93e52f9290df135e31d2af8
font_01_sfnt_off0000e3b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3B6 10416 bytes
SHA-256: d38e68e8eff11fd63ebc7a7c2753576068846fdbd4dec45501da9cb04282be77

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