Malicious PDF — malware analysis report

Static analysis result for SHA-256 80c07fca94e7139a…

MALICIOUS

PDF

70.8 KB Created: 2021-07-14 08:08:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 4c6d59ac936b4a316a07eda794716293 SHA-1: ff24da9b191b1f09544a0237cdda1f750f14b566 SHA-256: 80c07fca94e7139a9187fc567b6e4699c7830a2384d7f4ade7fac5414f0a6095
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to 'drafthe.ru', which is likely a phishing or malware distribution site. No scripts were extracted, but the presence of the malicious URL strongly suggests a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8216

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://drafthe.ru/square?utm_term=icon+pop+quiz+answers+characters+level+3
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e95146e51f1f218d6b71d4/1625903430889/62410077308.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e88d0bc46b35224583085e/1625853195685/paintings_from_egyptian_era.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e954c3fc46b1505829959e/1625904323945/14818941407.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60edc4f63e01114371257bac/1626195190750/zifatunivitobidejelitafo.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ee4f0bb1dcdf258da8f066/1626230539898/streamlabs_obs_chat_overlay_in_game.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b5f4.bin
98f66e2ebf74d4aadc2a2f1491775ac36767d8daf89e057d34335da6d53ab11a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB5F4 11052 bytes
font_01_sfnt_off0000cfc2.bin
87a441c7b738ebbd644033a358a6d008eb1a8ae48bbdbedc35fba263645f9f7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCFC2 15396 bytes
font_02_sfnt_off0000f729.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF729 16792 bytes

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