Malicious PDF — malware analysis report

Static analysis result for SHA-256 6507fddd0827d2f7…

MALICIOUS

PDF

76.8 KB Created: 2021-03-29 04:52:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1169b001dd9877412b1cd8c9d4c7d429 SHA-1: 55529180a39cc13fa215201260a9bd1ff23d451d SHA-256: 6507fddd0827d2f7a2b4daadcc952f5393b467059d3a3738c413a6a828b9037d
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to host malicious content or redirect the user. The document body, though partially obfuscated, references 'Dark souls 3 bosses' to entice clicks on the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jumiwimov.ru/strik?utm_term=dark+souls+3+bosses+that+can+be+parried
    • https://static.s123-cdn-static.com/uploads/4450421/normal_5fcf9e22edaec.pdf
    • http://maritimog.medianewsonline.com/zivezivegevebutukojuguna.pdf
    • https://cdn-cms.f-static.net/uploads/4465144/normal_605b1ddc99198.pdf
    • https://static.s123-cdn-static.com/uploads/4371240/normal_5fde6bfe4f59e.pdf
    • https://cdn.sqhk.co/zuxolusufa/jaijgfR/dual_universe_alpha_review.pdf
    • https://cdn.sqhk.co/kamozipu/T5ijV0l/classification_of_asthma.pdf
    • https://cdn-cms.f-static.net/uploads/4411682/normal_603a6e1e5eb31.pdf
    • https://cdn-cms.f-static.net/uploads/4377377/normal_5fd2dea44e802.pdf
    • https://cdn-cms.f-static.net/uploads/4406208/normal_6031bb2bf3656.pdf
    • https://cdn-cms.f-static.net/uploads/4501975/normal_601671106d49c.pdf
    • https://static.s123-cdn-static.com/uploads/4376875/normal_5fefd7155e99f.pdf
    • http://nekuwagibajese.getenjoyment.net/who_are_the_12_major_roman_gods.pdf
    • https://cdn-cms.f-static.net/uploads/4481825/normal_601367bd4fa5d.pdf
    • https://cdn.sqhk.co/kuretunaba/cBw0lVB/7_wonders_duel_board_game_prices.pdf
    • https://cdn.sqhk.co/wofikubid/haDj5jf/1984_topps_traded_baseball_cards_value.pdf
    • http://somubuzesixuwun.getenjoyment.net/m_chat_r.pdf
    • http://zanovekolasin.mywebcommunity.org/vamenuseve.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/0733993e-69bf-45c4-9832-6a1e144037de/35619141526.pdf
    • https://uploads.strikinglycdn.com/files/67bdb3cc-aab8-4333-975f-2df26d70ea05/foundations_of_algorithms_-_fifth_edition_by_richard_neapolitan.pdf
    • http://pawepeg.atwebpages.com/67826922842.pdf
    • https://uploads.strikinglycdn.com/files/dcab16cb-b454-41c6-816d-478e580b17b3/23966903440.pdf
    • https://uploads.strikinglycdn.com/files/c4af0d19-1c82-46f7-a833-b0b5ad622a18/9669296887.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_off0000efaa.bin
5b484da16a3e020969e65118a5b7b5cc397eea094a8976077f652985490f6f3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFAA 5528 bytes
font_01_sfnt_off0001026b.bin
6ebe39ac94d6cb90875f38b6a8a49b5b9fb289fd0e189e65d21f4cdda1ba3188		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1026B 10304 bytes

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