Malicious PDF — malware analysis report

Static analysis result for SHA-256 194e77f2eae85935…

MALICIOUS

PDF

76.6 KB Created: 2021-07-12 21:09:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ff3ab8f3c0a77e83ae09ab861013b484 SHA-1: aa87424315e223eb5e2b9538871e82a60bb43927 SHA-256: 194e77f2eae85935514728e39027f0786ee06c3babd905c66017f649d6b3392d
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely used for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7056

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://laborke.ru/square?utm_term=space+composition+photography
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e7b9208ad60325f0c47a3b/1625798944817/damon_ps2pro_download.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8ca8d351081123f7c3885/1625868941733/mawokexel.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e802babab062161339d6e8/1625817786914/remission_meaning_in_telugu.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ec7ed6e64ce53716345c85/1626111702189/the_reticence_of_lady_anne.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_off0000cc44.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCC44 16792 bytes
font_01_sfnt_off0000e45b.bin
7ead69c401d9ca57a5bc92a12ace4eb21e8f87ec69dbe1fc0e02a6a62027be7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE45B 10964 bytes
font_02_sfnt_off0000fd99.bin
ac330f9d572109cc359c59b12a630e60134e1b05af9fe0a1d05b524cd8223a35		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD99 15524 bytes

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