Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc1ad0be01133773…

MALICIOUS

PDF

79.8 KB Created: 2021-07-15 20:41:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: bd1499e75068f0eae4314c671e7dddd1 SHA-1: 4046680a14661c9489f59d4e5c24441a0667595a SHA-256: cc1ad0be01133773f497eae7f146c87108b9f9c93b3fc0696e16bab290036b07
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected by ClamAV as Pdf.Phishing.Trojan. It contains embedded URLs, one of which is flagged as external. While the document body is heavily obfuscated and unreadable, the presence of these URLs and the ClamAV detection strongly suggest a phishing or malicious redirection attempt. No scripts were extracted, limiting the analysis of specific execution methods.

Machine Learning

  • Nyx PDF Classifier clean score 0.1454

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/razvivatel/yapz/~3/gPkW7oTCsL0/square?utm_term=how+many+zeros+are+in+a+hundred+thousand
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60efd379fdf156014348ad21/1626329977419/bokole.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec9a9b831aaf5e928c5166/1626118813232/93411666084.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_off0000d63f.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD63F 16792 bytes
font_01_sfnt_off0000ee56.bin
81bfa30276d97eb413ed717d79f0c0e08d4e457f30e025e9052a73ef75c55912		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE56 10820 bytes
font_02_sfnt_off0001072a.bin
c458ff3fba7b7150e74c42ba963c11a153bd05611d214985305bc33cddaebe2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1072A 17024 bytes

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