Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce112600ec7b152a…

MALICIOUS

PDF

76.7 KB Created: 2021-07-18 23:19:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: fe7702bedd3fb51b68295ed11f3cfc6a SHA-1: 7214c2a5b23279df5595197d6d2123067f6d146e SHA-256: ce112600ec7b152a65b06edaa07ec6e31153ee6c84c6648de8c6d5db8e655c3e
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample 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.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7691

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/razvivatel/yapz/~3/1LSSs5qy-i4/square?utm_term=in+n+out+car+wash
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e81ba746a8e17713e739ee/1625824167950/instant_cash_loans_same_day_payout.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ed4912f67381323ef5d5d5/1626163474377/pacific_power_and_light.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e908d8854c1d3b3486148e/1625884888441/blue_and_purple_highlights_in_brown_hair.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_off0000cd3a.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD3A 16792 bytes
font_01_sfnt_off0000e551.bin
56b60c2bf391249f7897865273a2e54fd99eddb407c720ebaded4ccefe7deb02		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE551 10192 bytes
font_02_sfnt_off0000fc2f.bin
53b4ecb6de1f663dc19c4966fe21ddecb921f7aeb1aea3458ff54fd082c4a21e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC2F 16156 bytes

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