Malicious PDF — malware analysis report

Static analysis result for SHA-256 35bd8b616968ea53…

MALICIOUS

PDF

73.8 KB Created: 2021-07-20 00:20:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 67bef02008a4f09cc669db8f761fcb8a SHA-1: a5f45ce5ad919affa9d30c8b59c2c223886598bf SHA-256: 35bd8b616968ea534dc8879fa37797d9fb3f2f86434be0144e66cc7fdf5c7773
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ClamAV heuristic identified this PDF as 'Pdf.Phishing.Trojan'. While no executable scripts were found, the presence of embedded URLs and the nature of the heuristic suggest a phishing attempt. The document likely exploits the user's trust to redirect them to a malicious site, potentially for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2592

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://feedproxy.google.com/~r/sq/ugae/~3/nCRFBnYrBHY/square?utm_term=collection+of+fluid+in+the+scrotum
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec8d5c7d354a5e86a38980/1626115420159/gekegifat.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f11cf7e7c78223958842b1/1626414327440/minecraft_full_game_free_download_windows_10.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_off0000c4fb.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC4FB 16792 bytes
font_01_sfnt_off0000dd0d.bin
220ad0a68dd6a5f45ed3fd81d8b8aa78a85d573c6b10b26a6785ba53ccf8295f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD0D 15032 bytes
font_02_sfnt_off00010323.bin
338e2748dcd63378da460d29920fdd23eb133f416236f43940df14a20ed6d55d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10323 10708 bytes

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