Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e6c29773782fa66…

MALICIOUS

PDF

242.2 KB Created: 2021-07-19 11:41:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 13f4b3cd01a5c7deccbda3834996c248 SHA-1: 1a968afc82742eb35f119037205fcac6b1840b47 SHA-256: 9e6c29773782fa66a4af2c4b1721bf9a1a2e0458e183f1128e9ca47ce216351f
66 Risk Score

Malware Insights

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

The ClamAV heuristic identified this PDF as a phishing trojan. While the document body is heavily obfuscated and unreadable, the presence of embedded URLs and the ClamAV detection strongly suggest a malicious intent, likely to lure the user into a phishing scheme or download further malware. The file's structure and the nature of the detected threat point towards a spearphishing attachment, potentially exploiting vulnerabilities for execution.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3147

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/qQn0o4eTdIQ/square?utm_term=endonuclease+enzyme+example
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f5118a1434f6354738bc81/1626673546763/exposure_therapy_for_phobias.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f4590050974615f92c3818/1626626304990/61169982014.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f4e154689a653fd2a9dfcf/1626661204434/49980481741.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f3b188668793736d35c051/1626583432909/wozoxop.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_off000353e1.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x353E1 16792 bytes
font_01_sfnt_off00036bf8.bin
6c0c9b43d2b103573bebf86a3a56c2bbd15b582b7fbc05e5612a616eb4241018		 pdf-font-stream PDF embedded font (sfnt) at offset 0x36BF8 10744 bytes
font_02_sfnt_off000384b9.bin
3acd1124f5e955cc6c975494d6217ee1a9781437d49d0008a820adaeaa8d1bb3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x384B9 20268 bytes

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