Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eff476ebdb79266…

MALICIOUS

PDF

90.0 KB Created: 2021-07-13 21:15:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a516a35def1732476f86b8a128df0eea SHA-1: 94c8bfde619c9108175d193024e0404a82b62f3d SHA-256: 2eff476ebdb7926608d6353a15920d53962eab26a3be133bdb145f3357d7eca6
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains an embedded URL that directs users to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The presence of an external URI and the ClamAV detection strongly suggest a phishing attempt designed to lead the user to a malicious site. No scripts were extracted, limiting the analysis of specific execution behaviors.

Machine Learning

  • Nyx PDF Classifier clean score 0.0820

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://infrive.ru/square?utm_term=self+inductance+of+coil+formula
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8a87d2bd7a9201623e6e3/1625860221901/gavipe.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec832a700aa07a7894eba4/1626112811007/90719948290.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e589.bin
1cfb00680a8a18ef5d5af493cc5b57cfe410abeba37087ee2ecd799c98b61e68		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE589 16168 bytes
font_01_sfnt_off0000fb26.bin
b19e6274ea2f55ecf530994deb71463d821c849d2eebc177e9b23787b03d5263		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB26 10644 bytes
font_02_sfnt_off00011382.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11382 16792 bytes
font_03_sfnt_off00012b94.bin
cdf0861589f864ce5dc09e8676a5176ee3d1cc42d0b2bb3991326f732bc07f99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12B94 18260 bytes

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