Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a316c2f1b92d6da…

MALICIOUS

PDF

91.5 KB Created: 2021-07-18 21:44:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 65f755242b65ff6027ba46afe532f418 SHA-1: e76d356bbb6f2d09f732fc0d5280e333d15c6e0a SHA-256: 5a316c2f1b92d6da434809df6b3754623cb6106dc8302f9dbca3a179a30dcb27
66 Risk Score

Malware Insights

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

This PDF file was detected by ClamAV as a phishing trojan, indicating malicious intent. The presence of embedded URLs, although many are marked as benign, suggests a potential delivery mechanism for further malicious content. The file's structure and detection signature point towards a phishing or trojanized PDF.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3767

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/HbdJGeoIq_s/square?utm_term=the+angel+of+jehovah+in+the+old+testament+was
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60eca006651b7076defd49a5/1626120198840/60729495353.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f01e3979f953043cbfcaa3/1626349113543/90084246891.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f0cf6f9014c44c528ae1cf/1626394479996/30218558520.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_off0000e85e.bin
caade62f392c3f0c9f9f61d703e2cd7b28947f2a2093906ca33e937e02c57ced		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE85E 10944 bytes
font_01_sfnt_off0001015a.bin
f10349942550d3f28f0ec949117ba5c67babb7886aae530755583149a26ab812		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1015A 18276 bytes
font_02_sfnt_off00013060.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13060 16792 bytes
font_03_sfnt_off00014871.bin
325e77e6ff8f9a366a77536bf4ec337ce9609a2d609d3328f08a67778bcb7c11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14871 17068 bytes

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