Malicious PDF — malware analysis report

Static analysis result for SHA-256 f92522d672092f00…

MALICIOUS

PDF

82.1 KB Created: 2021-07-13 19:51:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: fbfb529be7a33d71ce24024e7cf53c4c SHA-1: 9134b933dc4ce95176c4af7f92d77139136053ff SHA-256: f92522d672092f003dbf85da2751ee689a8d53d73427dfc7ee1b5e451cd8017c
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected by ClamAV as Pdf.Phishing.Trojan. The PDF contains embedded URLs, one of which is flagged as a potential phishing attempt. Although the document body is heavily obfuscated, the presence of these URLs suggests an attempt to redirect the user to a malicious site, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier clean score 0.1741

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/pL_UGxDroB4/square?utm_term=faulty+in+tagalog
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e8d28f00b83d0a10886008/1625870991340/homestead_to_everglades_national_park.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec8f939a1cf201f805a267/1626115987630/count_on_me_count_on_my_love.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_off0000d99f.bin
030994e6e43c802edad4f07de40af9c98e4ec9c18356b01bc875ade8644f3dcf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD99F 19812 bytes
font_01_sfnt_off00010d22.bin
bc389cc6aed8d416784bf310bbccb4de3a615b11c5fb6124101da106a93feb17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D22 10076 bytes
font_02_sfnt_off000123a5.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x123A5 16792 bytes

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