Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b7e7966f6fad349…

MALICIOUS

PDF

86.9 KB Created: 2021-07-17 00:50:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 2d12f8ca2309cc46dfdb0df8472403f6 SHA-1: 6fc2352e5dd136cb308dd31530f2ca80f7799b92 SHA-256: 5b7e7966f6fad3494a60dc40b15e815a7fccd2c44df634e980686f161acccb43
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. The presence of embedded URLs suggests an attempt to lure the user to external resources, likely for further exploitation or credential harvesting. No scripts were extracted, limiting the analysis of specific execution methods.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8083

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/um1bUVUAM38/square?utm_term=german+adjective+declination
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ee9603b27e5958d593da94/1626248707598/wabowi.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee26378e3fff2bd3bebc18/1626220087336/80473560340.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec8e1ec81c37306b2f679f/1626115614745/gunoxokusumuvajebo.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec7d4319a16f038d61a56c/1626111299624/88302870026.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60eca39858d864752e042423/1626121112407/conservative_family_meaning.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_off0000f096.bin
80e868c0390b2840cc0725b4ab13598372a3bcec22eeccbf2b3a49084de92eee		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF096 18288 bytes
font_01_sfnt_off00011f65.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F65 16792 bytes
font_02_sfnt_off0001377c.bin
5e17ff172360860d09cdfbcc728ea515557a0fdbe381c8b0d687681271d7c1d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1377C 10600 bytes

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