Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8e9d7a5ea8a8654…

MALICIOUS

PDF

74.3 KB Created: 2020-11-30 04:44:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 475d4edb94ee2fd3619c8dc9f29d1f1e SHA-1: dcfafa3cac60216974abcb164c3aa19160fd1cdf SHA-256: d8e9d7a5ea8a8654ffe2c0e67325cd58c16ec05a724ecee997f58f5c8f671a0e
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains an embedded URL pointing to 'traffking.ru', which is likely used to deliver a secondary payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to downloading a 'channel logo'.

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://traffking.ru/strik?utm_term=my+channel+logo+xl+download+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4424011/normal_5f9ea4432f010.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384650/normal_5f989ecb8b86a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366633/normal_5f92175443640.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406501/normal_5f94863ac8f51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416322/normal_5fb6c24bca8cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387040/normal_5f8e47ed3d362.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/57dc7765-5204-488d-9867-2442fbe6a515/59166028881.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/53498730520.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1af5e794-5e3b-4616-9fd9-147da4e646d3/namudamib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d182017e-a6bb-41b7-b7a6-a7da61ed8c85/iqbal_masih_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0745dfb3-152d-4222-9b1e-e52d382ac36f/m2a1_50_cal_tm.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_off0000da5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA5B 5372 bytes
SHA-256: e14e433cb52a01500bef82de234b7b4e6e20b61c4ef19ccad16bc6c2ea9f516b
font_01_sfnt_off0000ecc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECC0 2116 bytes
SHA-256: 316f78c6e162999e43ccb83d429ef85c46045bf1ac59c77d169faf589ecd4eba
font_02_sfnt_off0000f66a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF66A 11304 bytes
SHA-256: fe46d655dffa3d0db7288bd6ebe2e0418bd77382cfa2b0038e212df5b53eabb1