Malicious PDF — malware analysis report

Static analysis result for SHA-256 049b7b3030a28828…

MALICIOUS

PDF

81.6 KB Created: 2021-07-13 15:51:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1b6baebb7693ae0bb925c13b26cfe936 SHA-1: 4ec90725f7c146fe91758b2e8238f8028b4412e3 SHA-256: 049b7b3030a288281435b30d3c8928ee9c7ae6af1eccd883cad7e7509378aa83
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with a signature indicating phishing and trojan activity. It contains an embedded URI that points to a URL, which is a common tactic for phishing or directing users to malicious sites. Although the document body is heavily obfuscated and unreadable, the presence of the embedded URI and the ClamAV detection strongly suggest a malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier clean score 0.1630

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/razvivatel/yapz/~3/-MXWpcYQ7kA/square?utm_term=worst+foods+for+the+brain
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ec80144c0b954f9ea3d1e1/1626112020842/you_say_you_love_me_i_say_you_crazy_song_download_mp3_free_download.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_off0000e07c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE07C 16792 bytes
font_01_sfnt_off0000f88e.bin
2c0a4ff88a89e5ff1136d7efdc9bd35bd06b47ec974565ec6def29237db4239a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF88E 16468 bytes
font_02_sfnt_off000122d4.bin
04f7d6e7da1a8c477470416095d64add07f5d90ac9405a3651275434629ff223		 pdf-font-stream PDF embedded font (sfnt) at offset 0x122D4 10536 bytes

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