Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbede984f0a72649…

MALICIOUS

PDF

84.0 KB Created: 2021-07-13 18:48:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c4fc17a3d3ddd9c44346bc63e96c5076 SHA-1: 41e0970744b537715615b63d58d2bc7be1352f70 SHA-256: bbede984f0a726499648219421270aea3bae22356fdf9a6713cdb61765dfd055
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ML classifiers and ClamAV. It contains embedded URLs that likely serve as lures to download further malicious content. The presence of these external links suggests an attempt to trick the user into navigating to a compromised or malicious site, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8502

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/UZrB20b2Dcg/square?utm_term=cds+previous+year+english+paper+with+solution
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e7b7e769e16759cf73f874/1625798632130/micrite_depositional_environment.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec7d2e4a8bde38c3441224/1626111278784/most_fluent_english_speaking_country.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec7c6154a52c186ce43442/1626111073236/numerical_analysis_timothy_sauer_solution_manual.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ed99b97d02012a3631c38c/1626184121809/wow_classic_icons.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e7ae547d3b385c94b35a8b/1625796180383/healthy_beetroot_cutlet.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec895c760c9e2bcf438f5c/1626114396253/viprow_rugby_league.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_off0000e3b9.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE3B9 16792 bytes
font_01_sfnt_off0000fbd0.bin
6b75b7a6c9ec7ee329d957757d08ef690e614738435319c47c1274c2da5e5575		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBD0 11068 bytes
font_02_sfnt_off00011561.bin
f4e2debe1410bc1c62aec8daeb2e8abc69830ae79015c8f77958d6e0a92a0da5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11561 17256 bytes

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