Malicious PDF — malware analysis report

Static analysis result for SHA-256 47eaab69b477eb9e…

MALICIOUS

PDF

78.7 KB Created: 2021-07-16 11:47:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: bcf6ddfbb3620f3cec8373cecdaf2145 SHA-1: b5274752e06ab6e019d2484758183f664fc538a3 SHA-256: 47eaab69b477eb9e45b22be91c1a11e4a345140132b72873cde5c8b699627433
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, disguised as a link to educational materials. Heuristic analysis and ML classification indicate malicious intent, with ClamAV specifically identifying it as a phishing trojan. No scripts were extracted, but the presence of the malicious URL is a strong indicator of a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8740

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://oniceh.ru/square?utm_term=solving+linear+equations+worksheets+grade+8
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60eda0098b6fd7287615747a/1626185737614/senexanowipadojuzor.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f0eb059392da325e93b38b/1626401541169/wirudadovezuroped.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e92511defa333328aa9ffb/1625892113080/gripping_gaap_graded_questions_2019.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60eded922799685454face41/1626205586593/example_of_allusion_in_romeo_and_juliet_act_3.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60eccb176230952f42d00483/1626131223466/99864160297.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f0cb975554232196b74712/1626393495535/you_are_impossible_meaning.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_off0000d06e.bin
eadad068fdaf359460817c86b0e3f9565da73e4d148b092f627a7ee2d2b14db6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD06E 11300 bytes
font_01_sfnt_off0000ea7f.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA7F 16792 bytes
font_02_sfnt_off00010291.bin
67d5541e6ad6a5d2cee69acb61d6fff0015cc0004f6cd7428a3b5cacd5634b83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10291 16852 bytes

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