Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffb96c121b6fe544…

MALICIOUS

PDF

82.1 KB Created: 2021-07-15 22:40:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e5b94ad93f038f37055387153ac38dc1 SHA-1: 40fdff8b81e295615a4e737db5047c072267f449 SHA-256: ffb96c121b6fe5448991457502cd01bf8020256c868a9b69d80eaa27ee1c38dd
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as a phishing trojan by ClamAV. It contains embedded URLs, one of which is associated with a phishing lure. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier clean score 0.1542

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/CcIy6vlvkUk/square?utm_term=hot+water+or+cold+water+for+blood+stains
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f06752faec3a5c4da9eeb4/1626367826399/bee_sting_on_my_head.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ee61db588fb5669516dabc/1626235355774/rotifin.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_off0000e116.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE116 16792 bytes
font_01_sfnt_off0000f928.bin
4b95b723614dda52f0ab9ccacffde2de749104223d44af868d22037f47d5b1ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF928 16656 bytes
font_02_sfnt_off000123e6.bin
4629c107cb31531a36c70b56f6a9375747c6614145475a622e24e0b6454f65b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x123E6 10684 bytes

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