Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a80b374a0c06261…

MALICIOUS

PDF

239.8 KB Created: 2021-07-20 01:20:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a89234e3d93f15cd0bbf4c411ae34f4b SHA-1: 81053e54fe7aece3a3199124b4903489bcaad843 SHA-256: 2a80b374a0c06261b2c99581ba92de9d223535d52c4872c90754be1141a65528
66 Risk Score

Malware Insights

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

The file was detected by ClamAV as Pdf.Phishing.Trojan, indicating a phishing attempt. The presence of an embedded URL, although marked as benign, suggests an attempt to redirect the user. The PDF structure and the nature of the detection point towards an exploit being used to deliver a malicious payload, likely for phishing purposes.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3308

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/WVKuihPcy9U/square?utm_term=savage+worlds+deluxe+pdf+free
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f29172b84a576e6cf85edf/1626509682528/fibosa.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec7c705f604029b990c44d/1626111088808/87272467751.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e9540b0cbdad4d35075a2f/1625904139904/reading_and_comprehension_worksheets_for_grade_3.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_off00034d39.bin
cd6e5e9a312f19fd5914a3eb6f06bd68e8f4366842d89a6a2a92712ec04fed38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x34D39 10808 bytes
font_01_sfnt_off0003662a.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3662A 16792 bytes
font_02_sfnt_off00037e3c.bin
4e64362bb6930fd7ab3693f444e0394f49e5759b378dfad0a3af41018bda4b53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x37E3C 19280 bytes

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