Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6de96b27adb5b22…

MALICIOUS

PDF

78.8 KB Created: 2021-07-13 21:26:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: fa51537af6003181e2209d7a1e3cbccc SHA-1: 47d0dfa15f4eda6594d6f733848bd4f5613f5031 SHA-256: e6de96b27adb5b22c710a2eab23b0ec169abb21a9073c10ff733cad089e605a6
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document that contains embedded URLs, one of which is flagged as potentially malicious. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing purposes. Although no scripts were directly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8755

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/~3/4P1vZUbBa90/square?utm_term=native+american+symbols+meaning
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8d4f00de7a140e9b02fb8/1625871600555/87753958387.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e8b59882ba4103f2957898/1625863576248/3106482171.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e8f47adefa333328a8943e/1625879675444/meaning_discernment_bible.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e95eb0566ded7d61ae6a4b/1625906864675/about_test_match.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ed97562d9f403b52111613/1626183510704/79551135432.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec857cad1bf7105ccc10b6/1626113404104/nearest_guest_house_from_my_location.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e7f7ae28bb5f4f516495ac/1625814959204/download_icecream_recorder_for_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_off0000d2bc.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD2BC 16792 bytes
font_01_sfnt_off0000ead3.bin
48cf479d280b54edb58684055a15b267180d231c617e5f773631e0c6516ec992		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEAD3 10872 bytes
font_02_sfnt_off000103fb.bin
d12ff9bb6375fec6d56635825b5ad41a5501976da0bd2b2b2c10a28bf8d92ff1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x103FB 16680 bytes

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