Malicious PDF — malware analysis report

Static analysis result for SHA-256 67d755ec28f97759…

MALICIOUS

PDF

63.0 KB Created: 2020-11-25 23:03:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b5f3df85703fd7ab98a287cd87edab0d SHA-1: 184d95b55617253a90baf9ff16a91296ca26458c SHA-256: 67d755ec28f977594e7f6348147489b9d3bc20b3cd27229b94f8f8bbc98811d5
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, specifically identified as a phishing trojan. It contains an embedded URL pointing to 'trafftec.ru', which is likely part of a phishing campaign. The document body, though heavily obfuscated, contains references to 'Roblox fake admin badge', suggesting a lure to attract users to the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafftec.ru/strik?utm_term=roblox+fake+admin+badge
    • https://cdn-cms.f-static.net/uploads/4502178/normal_5fae362c4686a.pdf
    • https://nokesopupikes.weebly.com/uploads/1/3/4/7/134767934/taviwixe-baremal-zukijuzaja-sudumatagirolun.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/fc4b634a-e623-48a9-97de-8b3f932f6c42/diyanet_namaz_vakti_program_v1._3_indir.pdf
    • https://s3.amazonaws.com/pusori/97969216312.pdf
    • https://uploads.strikinglycdn.com/files/c6407d4b-77d8-4e8c-91bc-477f684b382a/inverse_variation_word_problems_worksheet.pdf
    • https://uploads.strikinglycdn.com/files/7a469e16-9651-42c2-9028-73553879663c/68927824904.pdf
    • https://s3.amazonaws.com/gowebabuxogiro/rewubarepijatidopuraj.pdf
    • https://s3.amazonaws.com/jezobasit/joe_and_charlie_big_book_study_guide.pdf
    • https://s3.amazonaws.com/kosipefojaw/kawuwevupadudiwukinur.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b9b7.bin
e36e970845486fbfe3a3e4ad570ee9a1351906098030b3d0270447f32e85389d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB9B7 5232 bytes
font_01_sfnt_off0000cb85.bin
36b4f0f3b650378b4ce8cc3d144ed039cdd6d4933984ab8a7d195c72f4eddfe2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCB85 10612 bytes

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