Malicious PDF — malware analysis report

Static analysis result for SHA-256 05b968e4954b8452…

MALICIOUS

PDF

67.6 KB Created: 2020-12-06 10:51:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 2d8535dc947c13a0b6c15d9d8761e3d6 SHA-1: 2a4ce702f6fd981dbf50cb530d7e0c03d45e1269 SHA-256: 05b968e4954b8452a0939b5f76a714d78d35e9d85db064c6f4287761f13bf258
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'traffine.ru', which is likely a lure for downloading software. The presence of PDF-specific heuristics and the overall structure suggest this is a phishing or malware distribution attempt.

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://traffine.ru/strik?utm_term=popcorn+time+apk+para+ios PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4459774/normal_5fb870d317b3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449177/normal_5fc2a3e59f82b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473035/normal_5fb3e425e7363.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408330/normal_5fa275943863e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369508/normal_5f9f63a13db7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382430/normal_5fb6aac8e88a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388608/normal_5f9e01ab42cc1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383314/normal_5f9819ad4fb13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379379/normal_5fa1fb5db9c0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425507/normal_5f9afe771d384.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481671/normal_5fc56c8007c6a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481409/normal_5fb86287786bd.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/10c6f339-7f5e-4af0-a3b8-75f90f32b10f/phantom_of_the_opera_piano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e664f5e-9a72-4da6-8cde-c0d7ed339e79/95668231655.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_off0000cb90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB90 5112 bytes
SHA-256: 726458c765e624de2dacb0ff1cf2e513c155b94123223d9683a407faf2b93836
font_01_sfnt_off0000dcd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCD8 11164 bytes
SHA-256: 6dd2585073067e5fd0bb0ecaa33e982704e0a66cbdeba921bc2348c19d47541f