Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0b1e194b3656327…

MALICIOUS

PDF

106.3 KB Created: 2021-07-16 13:32:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 96b365c388c49c8fd15160a08cc850ce SHA-1: 27bf594a66e29b4e2f7acda231749305309e36f8 SHA-256: b0b1e194b36563279a5671b1f865408270f266a41a2104d20faccb9a81919727
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains an embedded URL that directs users to a suspicious domain, masquerading as a movie streaming link. This is a common tactic for phishing or distributing further malicious content. ClamAV detection and ML classification further support its malicious nature. No scripts were extracted, but the presence of an external URI is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5412

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://crewmak.ru/square?utm_term=under+the+dome+full+movie+in+telugu
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60edfed8e6792c2552be77d4/1626210009185/68800636557.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f07588529fbe08b0abe255/1626371464536/36491928659.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60eca39f80388a1034da1030/1626121119996/sweller_cognitive_load_theory.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f01bb716a6d35a11141231/1626348471628/shawn_colvin_someone_like_you.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_off00013dca.bin
31b9fcf9cfdfb372bc94090d9364a82412ed45cd99a6f8b3a1d796c100c6ebd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13DCA 18112 bytes
font_01_sfnt_off00016d30.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16D30 16792 bytes
font_02_sfnt_off00018547.bin
13d807475ea14058332c702650c5e025308de81231bc24322a343d82352899f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18547 10644 bytes

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