Malicious PDF — malware analysis report

Static analysis result for SHA-256 85ede06eebf89479…

MALICIOUS

PDF

80.1 KB Created: 2021-07-12 21:38:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 019c1e2f8169badd38bd3d92e01cdc31 SHA-1: de669213a2c8648cfbf4d31bf2eb581e0bbc7e4f SHA-256: 85ede06eebf894797b9959ddf85d41c249c6caf20cfe328ccd8d3117496d0b82
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an embedded URI pointing to a potentially suspicious URL, combined with the PDF structure, suggests it's designed to trick users into visiting a malicious site. While no scripts were explicitly extracted, the PDF format can embed JavaScript for malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6166

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/pL_UGxDroB4/square?utm_term=fun+facts+about+deforestation
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e92e6b2f3c4128e18ac285/1625894507489/vovadiponoresukedubunaju.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec8802950202184f1109df/1626114050755/61315624169.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e8c3b9fe2317389ced8bfe/1625867193905/sevokuzumuxolevakele.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8ef9a2c5c2f6215c6e488/1625878426733/numufimiki.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_off0000d627.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD627 16792 bytes
font_01_sfnt_off0000ee3e.bin
976f03571a426b0ed95be16c6cda57d95380741a58af706204ea961dfdf7333f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE3E 10640 bytes
font_02_sfnt_off000106b9.bin
4ebc4aeb1439066ccbdb694a5020e2f26fcbaa6d2e0ce4d09d00ce1a0954c9ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x106B9 17552 bytes

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