Malicious PDF — malware analysis report

Static analysis result for SHA-256 6282954d94d99081…

MALICIOUS

PDF

73.2 KB Created: 2021-07-18 05:53:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 3729055d693fc2f0d966d5cb86d00a2e SHA-1: b4f677cd0b6156164ccc58eec16559b6e794d2ce SHA-256: 6282954d94d990817033b664461352a21fc8552865d1b9df9ba2b50103bc382f
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URL that, despite being labeled as benign in the provided context, is presented in a way that suggests a lure for downloading software. The PDF structure and embedded artifacts do not provide further insight into specific malicious behavior beyond the presence of the URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6242

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/kVSxLQpkboc/square?utm_term=farming+simulator+19+download+free+for+android
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec8f0b8c19ad4998dbdc16/1626115852082/67017909653.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee06bdc450ee4730835502/1626212030076/ridakititujos.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f15cbc96ce9b33d732b611/1626430652591/jowegugojexejud.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_off0000bf94.bin
0edbbc84717b594618ac06244881f55a5921b1007adbeb4dba529a9d1d309a66		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBF94 14904 bytes
font_01_sfnt_off0000e54c.bin
76ee175ce4e15a941e118628b7482bc22749034002ce618673468df459d9b57d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE54C 11080 bytes
font_02_sfnt_off0000ff0c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF0C 16792 bytes

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