Malicious PDF — malware analysis report

Static analysis result for SHA-256 93a6bbc05b4f270d…

MALICIOUS

PDF

133.3 KB Created: 2021-07-20 21:44:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 349cbbced8409a9152807d5ae2385f79 SHA-1: e500bf567cdf9a40d7055dc807c9a21c4df6f7d4 SHA-256: 93a6bbc05b4f270de3103593f79aba4ad66ea6dc8195b51f143497e66d4e2f18
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ClamAV heuristic identified this PDF as a phishing trojan. The document contains embedded URLs that likely lead to malicious content, attempting to trick the user into visiting a compromised site. No scripts were extracted, but the presence of embedded URLs and the ClamAV detection strongly suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3976

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/~3/5Aj-mlxkUx8/square?utm_term=work+for+hire+producer+agreement
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f673161138321192af4d88/1626764054395/26413568894.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f592fb5936cb6d78fbc842/1626706683523/robusokugukepusadagam.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee58a0b82b30476862153d/1626232992778/43775359408.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_off0001a87c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A87C 16792 bytes
font_01_sfnt_off0001c08e.bin
77ca4b2c02de863ad67a9b6165b4c3476ec765e39c7eaef7b167a8f535932df9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1C08E 17872 bytes
font_02_sfnt_off0001efe2.bin
f13e04f9aa4e1ef48bd550fc61c556b6a52b1da3a03dfcd8f2bb2c3f17d0ee3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1EFE2 11036 bytes

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