Malicious PDF — malware analysis report

Static analysis result for SHA-256 c64633bd79616657…

MALICIOUS

PDF

85.6 KB Created: 2021-01-07 02:52:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: f0941d5ad752250827670a5ebf1a295a SHA-1: 76a4d9f325d42f4c7868d0ef3c0402d63a384bb2 SHA-256: c64633bd796166570bd5d66e34c9d6bd587b25f0b8ebdf2e125452837ec83244
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, traffnew.ru, which is likely used to host a phishing page or a second-stage payload. The PDF structure and embedded content suggest an attempt to deceive the user into visiting this external resource.

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://traffnew.ru/123?utm_term=the+wisdom+of+the+enneagram+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4408989/normal_5fed6fef84076.pdfIn PDF document text
    • https://cdn.sqhk.co/pasepizut/jiaUVhb/94478729026.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383582/normal_5f936b2a84269.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402949/normal_5fda129d61436.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468274/normal_5fdf469414142.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/vajefam/blanco_state_park_fishing_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac922782-e578-44a3-8c81-89fa8d662aa1/bikaremubotuvidopemudi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d93d0e1-abf4-4703-b86f-2685bb4a9a53/sofuxipexidonetafejuxivim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11bbb0d1-3a62-447e-86a5-cf51c0acbf2c/homeschooling_in_michigan_for_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dazutun/43008825275.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4e52897-c568-4c1d-b9c1-c1d2440d31d1/car_games_free_download_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/feca1469-5205-45dd-a6a6-69bc4f7be928/7928666505.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_off0001129a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1129A 5464 bytes
SHA-256: ac69772369c66616454242b421e1f5908cda949440beac6c9233b0f91df03f1d
font_01_sfnt_off00012518.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12518 10732 bytes
SHA-256: 97062a91613dc11d2d64800de1f42f5a921be34f5251fc597bc50cb98dbed362