Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe05dbf04ea416ea…

MALICIOUS

PDF

96.0 KB Created: 2021-07-13 15:59:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d16681d01684353de6a57ae9cfe055b8 SHA-1: 9455ceef76441922631532555ebf2feff28f4fb4 SHA-256: fe05dbf04ea416ea8172bdc0c1789de9162690979e3bdbe5b910ff407760bd43
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file is identified as a malicious PDF by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of embedded URLs and the PDF structure suggest it's designed to lure users into downloading or executing further malicious content, fitting the profile of a phishing or trojan delivery. No scripts were extracted, but the PDF structure itself is likely exploited.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5903

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=river+of+fire+warriors
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e773a595edcc5d1076d4af/1625781157626/national_geography_standards.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e7e1315c13cc4fedeb20cb/1625809201513/8032112362.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ed8cd6c50d503b9d597e89/1626180822551/after_effects_free.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e9617ec22c005c933a88da/1625907582319/one_piece_stampede_english_dub.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ecb83c3c961a3b2c5afe88/1626126396890/95221116579.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010b9e.bin
b698c1ef52fbe3ae6196d65239cc569cf2252c0fce904bb359e8aa0f288e969c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B9E 17596 bytes
font_01_sfnt_off00013a1f.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13A1F 16792 bytes
font_02_sfnt_off0001522c.bin
7cb59a1258f90481f785a078ff38f4856ea854d238d2507a72b108dd58d1c13a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1522C 2512 bytes
font_03_sfnt_off00015cfe.bin
939554c33a18f978df0f33300c25b79b4f1317b4c9778ae1679b345301babbaa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15CFE 10156 bytes

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