Malicious PDF — malware analysis report

Static analysis result for SHA-256 94e7272b658ddf95…

MALICIOUS

PDF

73.5 KB Created: 2021-07-13 16:38:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a55308da9a078f23cf5ed4b054e9e643 SHA-1: 5a92d368995c16ea43edcbea39679b84da4c0467 SHA-256: 94e7272b658ddf952e4ccf9b5f4d12aba316b179b9719fa5e1623cb8253fc2e9
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF that contains an embedded URL pointing to a suspicious domain ('smidgel.ru'). ClamAV and ML classifiers flagged this PDF as malicious, specifically as a phishing trojan. The presence of an external URI and the overall detection scores indicate a malicious intent, likely to redirect users to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8907

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://smidgel.ru/square?utm_term=mechanical+engineering+mini+projects+pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e94bc8b68d8f0f4bf9993d/1625902024263/31819336254.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e7d410fdc75e32ab072afc/1625805840809/zotamujusifuguboti.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e7d4825eabb22f35da5d09/1625805954443/how_do_you_put_a_name_tag_on_an_animal_in_minecraft.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ecd37039a35620adcd160d/1626133360756/3_variable_calculator.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e79df5ce8457037edf32f6/1625791989713/wild_party_meaning.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec93c45f8bf969071f3922/1626117060556/lefin.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_off0000bf69.bin
894b837b27c43c1625e8caed031e811a4df498a39dfb66b5a5c5bfb7f1f57691		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBF69 11192 bytes
font_01_sfnt_off0000d921.bin
e1463c032b68ee32d446d4cead3bebc1d933c31e3bbbcae620f7840a7f7ac9b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD921 15904 bytes
font_02_sfnt_off000101e5.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101E5 16792 bytes

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