Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc08783ca18aea10…

MALICIOUS

PDF

89.5 KB Created: 2021-07-15 13:25:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d1f4ff774953dd05059d95a1b47f80fa SHA-1: 360d241a73f7664fe8d9539066a576136cabd660 SHA-256: dc08783ca18aea100babc0d6082ff8972f097461282fa5bb914cb3072a94db13
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs suggests an attempt to redirect the user to potentially harmful external content. While no scripts were explicitly extracted, the PDF structure and embedded URLs are consistent with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8627

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/ZV5PD9BTPXI/square?utm_term=appetite+for+democracy+3d
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ee408a796bb0196c61eb81/1626226826300/be_kind_and_polite.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e94cb2f492d21a0f6c34e3/1625902258884/detubagokofasarajagenupu.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e90cecdb8bb141bad89bd2/1625885932502/29813835997.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ee49cc2ee8b51fd936293b/1626229196516/88168310235.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ed8cf56ebf0d48ea90e5d2/1626180853659/4340349306.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60edb4fbc2b60e0ed5b7137a/1626191099823/architecture_journal.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee396c4d490f6727519c15/1626225004350/new_visualizer_for_avee_player.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_off0000fd7d.bin
7fa408e0ebc45a345d2825984fee6ee0fd7f33dfffd0e8834d8ff8a754181ffd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD7D 10732 bytes
font_01_sfnt_off00011642.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11642 16792 bytes
font_02_sfnt_off00012e54.bin
0bebce4899d78a0d604e68e65287e22d3935f32a8fdf43937f5a367333a00c40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12E54 16792 bytes

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