Malicious PDF — malware analysis report

Static analysis result for SHA-256 947793ab0c6addd0…

MALICIOUS

PDF

68.2 KB Created: 2020-11-23 21:50:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: d80701454bc5c8809d55a9018fec6e60 SHA-1: 82ce3e270457db1c9c0a666cf0f6d53f5ce37d06 SHA-256: 947793ab0c6addd0a947b7903efcffe3985dd6f759a7487051aa2cff50dfc5f2
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://traffnew.ru/123?utm_term=google+slides+size', which is likely used to redirect the user to a phishing or malware distribution site. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of external URLs strongly suggests a malicious purpose.

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://traffnew.ru/123?utm_term=google+slides+size PDF link annotation
    • https://pevugubak.weebly.com/uploads/1/3/2/7/132740457/depeviteroxovasagela.pdfIn PDF document text
    • https://dunidapakepew.weebly.com/uploads/1/3/4/3/134319263/zuzojiwuj.pdfIn PDF document text
    • https://pevugubak.weebly.com/uploads/1/3/2/7/132740457/zakosode-norikiv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379849/normal_5fb9eb86e7793.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417999/normal_5fa00df733377.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394073/normal_5f98dfb254c33.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8a08a99-f1e7-4bc3-a032-9e125842b03b/46257876869.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c0496e3-7a1b-43fa-9f54-6c3fa454d993/gujuxasozuxup.pdfIn PDF document text
    • https://s3.amazonaws.com/lopazura/college_online_introduction_example.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/048c73de-4019-4688-aaa5-9151eb894587/super_mario_world_strategy_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/lovadatovupafoxevojonani.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_off0000d07b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD07B 4768 bytes
SHA-256: 2c53537aa8ffe0483eefe03e7b0d81c9a4e48b035151965bf1d3797887b028d2
font_01_sfnt_off0000e0d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D5 10360 bytes
SHA-256: 8e53c3537ed97803ffeaacdf946e354c0e3ee4c1d426c24e10f6df4e7af93887