Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c849d0df80bc233…

MALICIOUS

PDF

361.6 KB Created: 2015-08-24 03:54:30 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-10-31
MD5: 1818b98de3000409f3b87bf199c88e7b SHA-1: 2933b6005c695f383cb6d0adb434f7ead7cdbe0c SHA-256: 9c849d0df80bc23398d9d112fad9f80c44e082d14b18ed48de127a4d625cba9e
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded URL that is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, appears to be related to a game patch, suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

Heuristics 2

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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 http://botcraftman.ru/?lip&keyword=pes+2013+russian+super+patch+rsp+2013+%D0%B2%D0%B5%D1%80%D1%81%D0%B8%D1%8F+20+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8 In PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4695/4695188_plestal__instrukciya__po_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4696/4696778_stressovoe__sobesedovanie_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4696/4696408_novikovskaya__o__a_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055e31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55E31 9396 bytes
SHA-256: d202a117fb516916390adcd935431c05848545a8a969e01ab1030745c446a7be
font_01_sfnt_off00057803.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57803 15260 bytes
SHA-256: 661ddbda5a9aed413081f68a6643a0dff8a60ac3c43513f4b2a34921e0b5ab3f

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