Malicious PDF — malware analysis report

Static analysis result for SHA-256 f992159d1dff1474…

MALICIOUS

PDF

79.2 KB Created: 2021-07-12 21:59:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ba64da2707d45c44cb0723664a171fb1 SHA-1: 6a5a304ca1a6906d4cca9c9a0448bc801e3b9789 SHA-256: f992159d1dff147416c6685c3d8894b3689e6895136316ea9bdef03a804c1146
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an embedded URI pointing to a potentially malicious domain, coupled with the PDF structure, suggests it's designed to exploit vulnerabilities or trick users into visiting a harmful site. No scripts were extracted, but the PDF_URI heuristic indicates an attempt to redirect the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6556

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/IdU8rIDf9lQ/square?utm_term=tamed+and+untamed
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec7a4a8300fd66e1954ffc/1626110538235/example_of_assimilate.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec84ca8300fd66e1966587/1626113226272/wedding_invitation_background_video_effects_hd_free_download.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e8edd8e51f1f218d67b01e/1625877977086/simplifying_algebraic_fractions_worksheet_with_answers.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_off0000d7cf.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD7CF 16792 bytes
font_01_sfnt_off0000efe5.bin
d75985f7c6266ba1007063e0d52382ddb77611403ae1cb06bb4e533252514518		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFE5 9948 bytes
font_02_sfnt_off000105cf.bin
a4fcd2ccf299fd97a22d2afc287fdb2bc9da658be749662c9fab138420516a73		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105CF 16708 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.