Malicious PDF — malware analysis report

Static analysis result for SHA-256 e10c5ae05af07000…

MALICIOUS

PDF

72.7 KB Created: 2021-07-12 22:09:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 2dda9f8424bb39fe90e2c7daacf8f70f SHA-1: 12c26d950c2d8ec0926499e3bf7bf65a7cac3a60 SHA-256: e10c5ae05af07000de9bf5c3d280409edda3bc5efea96675e5b88145b686c27e
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 malicious intent. It contains an embedded URI that points to a Google feedproxy URL, which may serve as a redirection to a malicious site or payload. The PDF structure also shows signs of manipulation with duplicate object bodies, a common tactic in obfuscating malicious content.

Machine Learning

  • Nyx PDF Classifier clean score 0.1558

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/AG-UZpNbJGc/square?utm_term=pamphlet+for+art+and+craft+classes
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e82d284454ab0ddd893e63/1625828648862/jaxava.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec8380f89f8e700bf76644/1626112896055/how_much_does_a_longsword_weigh.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_off0000befa.bin
44ce9808e19b33eb6286d16a2411650f40bc4e7e31649d1e40121275612c0e34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBEFA 10792 bytes
font_01_sfnt_off0000d7a4.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD7A4 16792 bytes
font_02_sfnt_off0000efb6.bin
0248cd82a7688907e9b20083498cc41feced07c3163cac75b32eb9cc9f2e5b87		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFB6 14864 bytes

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