Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb9d0c0e9ce858cb…

MALICIOUS

PDF

86.4 KB Created: 2021-07-18 12:02:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: cf8683f032fd6850d5c8a45b198b4c9b SHA-1: 579b24be3faf54c08d5112bfb38d96aef73ff9a9 SHA-256: bb9d0c0e9ce858cbf44b0a41dd548e0bfd43ad86bcc4824481168b776810a437
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and an ML classifier. It contains an embedded URL that is likely used for phishing or to download a secondary payload. The PDF structure and embedded URI heuristic indicate an attempt to direct the user to an external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5959

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/RVI1sXQGPkU/square?utm_term=here+in+the+love+of+christ+i+stand
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8f713f229ba2ea8354e72/1625880339346/sozirikubuxezuzukov.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f202e22dca802cab779c13/1626473186945/advance_your_swagger.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e903232f3c4128e188fe89/1625883428035/stewardship_in_the_bible.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f076e9ddb9184a160d4f6d/1626371818039/36545572887.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_off0000ee4e.bin
1e71595f4324f526bd732f1ec866c4227ab0ba330fa7676f9dce75311aba56da		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE4E 10628 bytes
font_01_sfnt_off00010683.bin
fb468310c2a5df0a1cd23fb460b0af836ecf63bafc6b0ddc5f5a1dfa0aae5fce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10683 17984 bytes
font_02_sfnt_off000135c3.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x135C3 16792 bytes

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