Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6df67af7e6bed4d…

MALICIOUS

PDF

80.6 KB Created: 2021-07-14 00:58:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d2d02f80888eef7fa03b9e8b77402376 SHA-1: e02231ee31fd948c32727b15bd8bb8ab142cc9a8 SHA-256: d6df67af7e6bed4d576450255b532249830398a10b58e25e4ac2b15383f45b8b
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs suggests an attempt to redirect the user to external malicious sites, likely for phishing or to download further payloads. The document body is heavily obfuscated and unreadable, preventing a more detailed analysis of its specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8571

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/uzX87CUNjRg/square?utm_term=durden+and+hunt+chigwell
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8f2061448b06198468f47/1625879046662/mezibenodudixaxe.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee08eb64675e3b9ddd2943/1626212587399/truth_tables_worksheet_answers.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e94606f492d21a0f6bfec5/1625900550361/attorney_and_solicitor_difference.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e92a052c5c2f6215c95310/1625893381221/radiation_therapy_for_breast_cancer.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ee083ac27d1e40a5460a9f/1626212410176/principles_of_success_in_business.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e9369a563c1506a8b6cb36/1625896602077/how_to_connect_your_pro_controller_to_your_pc.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_off0000daf8.bin
c943a7b4b3f672cdd6d1c4a7ac7684310eb316b3607ee234496336b1746f4706		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDAF8 16892 bytes
font_01_sfnt_off000106e8.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x106E8 16792 bytes
font_02_sfnt_off00011eff.bin
30a2d7cef2b668122656ab4766050986528064dec559724b851db42d4a060f35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11EFF 10548 bytes

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