Malicious PDF — malware analysis report

Static analysis result for SHA-256 96000149f170d290…

MALICIOUS

PDF

75.8 KB Created: 2021-07-17 20:24:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e1a7c7884dcde9d16d1e734655e9d0b2 SHA-1: c57dd852b2c74092ebd8fd77e25da57c61bcfde7 SHA-256: 96000149f170d2904766c5f93b901f1e7a5da2d10f728c0bdde46d2fa5279cd5
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF that contains an embedded URL, identified as a lure for downloading a game. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The embedded URL, while marked as benign in this context, is part of the attack chain to trick the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9186

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://feedproxy.google.com/~r/razvivatel/yapz/~3/-MXWpcYQ7kA/square?utm_term=fortnite+game+free+download+for+android
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f07ddf0fcd175c5037192f/1626373599308/62331195406.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec91c1f83a7f26ecd1b2d4/1626116545981/buxineromunilabenojob.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f190ced73e147f60972306/1626443982121/lego_star_wars_3_character_cheat_codes.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f105056e3a8560b3d12310/1626408197908/88136003190.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e8f22ccc7c08645924d6fc/1625879084166/flapjack_with_treacle.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_off0000cba3.bin
168e80ae874732520fd692ca83e3dc75f1b152bf130c092ef6beb654c99728ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCBA3 10592 bytes
font_01_sfnt_off0000e39e.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE39E 16792 bytes
font_02_sfnt_off0000fbb0.bin
efa3929c33ea3754d8f7476cce613b110be95ad8d5287f52c5bd1c977c623ee7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBB0 15520 bytes

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