Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cba150672a59113…

MALICIOUS

PDF

73.0 KB Created: 2021-07-17 10:27:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 927377ca41c3d3d563423ad849f2319d SHA-1: 4d610ffb3ac95fb714a38523f5e581f4de1325b8 SHA-256: 6cba150672a5911334e0fa6b091b428b3a246a9f4b9749e0a358f1fb834ef822
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The presence of embedded URLs and the ML classifier's high score indicate malicious intent, likely for phishing or delivering a secondary payload. No scripts were extracted, but the overall detection profile strongly suggests a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8216

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/~3/1LSSs5qy-i4/square?utm_term=physical+properties+of+wool+fibre
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e7adf7afd06e4982e81adb/1625796087418/the_struggles_are_real.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8a7313c197e145b25b701/1625859889299/consulate_meaning_in_tamil.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ed901d6b40a9602c98d5cd/1626181661317/how_to_make_people_want_to_talk_to_you.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ee436eb1dcdf258da84a37/1626227566367/free_books_to_read_online_without_downloading.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ed9688c8cbd011b90b5040/1626183304908/fubodaguniva.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_off0000beff.bin
6905e11f977edae999cbf64add7536d73539fd6c1cec53157f42fe19d83d7b4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBEFF 10816 bytes
font_01_sfnt_off0000d7f7.bin
2bf887c4b330d75ef0f7d1c59dafa6e907c70cfde0a22afa0beeefdd093670de		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD7F7 15692 bytes
font_02_sfnt_off00010026.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10026 16792 bytes

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