Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3a0c10d117f572d…

MALICIOUS

PDF

69.7 KB Created: 2021-01-19 02:43:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: f25b4f93ba2976800b67702eda0aaf57 SHA-1: 1959fb29d72e435f301b5702bf611804cb86679d SHA-256: e3a0c10d117f572d9de7aedef39ae33240605542a4090298442b97e1b1e824b9
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to 'https://trafffi.ru/123?utm_term=pcsx2+emulator+android+apk', which is highly suspicious given the ClamAV detection and ML classifier flagging. The document body, though heavily obfuscated, appears to be a lure related to 'pcsx2 emulator android apk'. The presence of external URIs in PDFs is a common technique for phishing and malware distribution.

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://trafffi.ru/123?utm_term=pcsx2+emulator+android+apk PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4467273/normal_5fb8a9346af39.pdfIn PDF document text
    • https://cdn.sqhk.co/jivobukafon/vrigg7U/nolajezizogoru.pdfIn PDF document text
    • https://cdn.sqhk.co/netimawifes/jbejiQJ/nalilemopixe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393181/normal_5f904d85bc734.pdfIn PDF document text
    • https://cdn.sqhk.co/pajerelo/6jgHBj3/20623884930.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460966/normal_5ff7ea1c63dfd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369917/normal_5f8a4db0a24e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414502/normal_5fb49916d1f49.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426967/normal_5fa0c07a3493d.pdfIn PDF document text
    • https://cdn.sqhk.co/wadusazilox/7yamm2d/sagomam.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417997/normal_5fa5d0ef2f0df.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/tokudapele/ximibukogurovubeliparur.pdfIn PDF document text
    • https://s3.amazonaws.com/vizegemawokaxe/44952580832.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_off0000d338.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD338 5484 bytes
SHA-256: e8de43228473dd39d33906f20c4433a7ce3fe31ecb141c0bac5360fd792b2f1e
font_01_sfnt_off0000e5d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5D2 10564 bytes
SHA-256: 32b5dbff4a52f6e80569e0ac3140924ec890465934881c04bad54c841bd300f6