Malicious PDF — malware analysis report

Static analysis result for SHA-256 e332d3c1d5736efd…

MALICIOUS

PDF

77.9 KB Created: 2021-07-13 05:34:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 0eeb4a002ac51123fdfe7f4f80c011b0 SHA-1: 2684c678e45a5836b607b3d42fdb28e6f82dcc12 SHA-256: e332d3c1d5736efdd31dc1a5af8b59bd231eba618f8a029ba33cd872ae89abd4
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains embedded URLs, suggesting it may be used for phishing or to redirect users to malicious sites. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are common in phishing campaigns delivered via email attachments.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7746

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/AnJPYMJXbyQ/square?utm_term=deny+meaning+in+bengali
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e924d7e6bd1231e6080e9a/1625892055660/78846134062.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec8bf1fa40056e74d31e70/1626115057820/98453552712.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e897ea9452577f3a84d046/1625855978670/fivuzibelosawemumowelo.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e8bbb43be7a25fda2bdc12/1625865140863/legewedufonizebetebize.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_off0000d382.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD382 16792 bytes
font_01_sfnt_off0000eb94.bin
722d5cd2a3d1c4f2c7e3c1a3a815c93cd69826e9fc70f12127dab59718609496		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB94 15672 bytes
font_02_sfnt_off00011383.bin
3d296645c45d071408b1c1e3925be2d01aa414ca731d251a325db547a1a0dc77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11383 10220 bytes

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