Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2ebb19d7aeeec10…

MALICIOUS

PDF

97.1 KB Created: 2021-07-13 15:58:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ff7dfeb527d12f8897270d4c93de3344 SHA-1: fde816e840bb6e9c811efc38f96f0b4766149bbb SHA-256: e2ebb19d7aeeec10c21df186bcdea54deaa69701e800bdf346b603010a516dbf
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating it is likely a phishing or social engineering attempt. The presence of embedded URLs, though some are marked benign, suggests an attempt to redirect the user to malicious content. The PDF structure itself contains indicators of malicious intent, as flagged by heuristics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6187

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/~3/9xivtwLAy4k/square?utm_term=i+will+stay+by+you+forever
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e95870e6a58043b6933b82/1625905264672/23715555939.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec8cfa934d360eb288ec46/1626115322906/revivesezitopeduzolex.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e78e0e4454ab0ddd816eb0/1625787918807/english_speaking_course_in_60_days.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_off000119a9.bin
091bb929899c0c8a1e395a7a8dc71ece7959fcb28c6c4facf2fa007d76157088		 pdf-font-stream PDF embedded font (sfnt) at offset 0x119A9 10560 bytes
font_01_sfnt_off00013201.bin
38f86816599ca7486498c4f7c5f3dc99aa60e4741d9863aa0bab1d5e8cb98103		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13201 18164 bytes
font_02_sfnt_off00015f42.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15F42 16792 bytes

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