Malicious PDF — malware analysis report

Static analysis result for SHA-256 de02319dc91dec1f…

MALICIOUS

PDF

76.0 KB Created: 2021-07-13 17:24:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ba8fb03d390c42a5a894bdbb6de9e060 SHA-1: f8cc68e3bd77dfc9cf62b50bc1c40e6ead7b69c8 SHA-256: de02319dc91dec1fa5a23b769b6944ebc0a040a84c520cfcdcf11fc3d9b39344
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, although many are marked as benign, suggests an attempt to redirect the user to external resources. The PDF structure itself, combined with the ML detection, points towards a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9125

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/kVSxLQpkboc/square?utm_term=put+two+pdfs+on+one+page
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ecb5f5b525121650f3622f/1626125813399/is_going_to_be_vs_will_be.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e9068cc4c1a734c5d5af64/1625884300475/21446020178.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e81a4b51cb2a526cff064f/1625823819503/danugesek.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e91b251448b06198484805/1625889573483/proofreading_marks_middle_school.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e86ea884b8863bdd3f1134/1625845416139/jemog.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_off0000c5f0.bin
fc0e23913e62c6e0d90f5425643569ac2c916d0b5cf70ba1eab5ea749c800e68		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC5F0 17508 bytes
font_01_sfnt_off0000f437.bin
9cc98c0c6d93b3823642f86d00aaa43ffe7a408560f82cee30eb3cb8fbea9c09		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF437 10620 bytes
font_02_sfnt_off00010c8b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C8B 16792 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.