Malicious PDF — malware analysis report

Static analysis result for SHA-256 c672bf89b917a33b…

MALICIOUS

PDF

185.2 KB Created: 2015-07-25 01:16:36 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 306caea9bbbd1c53c836b43e8c984957 SHA-1: 24da6ff6afbc57a4694d5c06ff0c8d791ef340a2 SHA-256: c672bf89b917a33b0a23519fdd4c8bd13d7f2cf5a5cdb939b432cf8ea5128c53
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. The redirector URL is likely used to funnel users to a malicious website for phishing or malware delivery. No scripts were extracted, and the document body was heavily truncated, limiting further analysis of the exact lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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=%D0%BA%D0%B0%D0%BC%D0%B5%D0%B4%D0%B8+%D0%BA%D0%BB%D0%B0%D0%B1+%D0%BB%D1%83%D1%87%D1%88%D0%B5%D0%B5+%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
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185690_inglizcha_o_zbekcha_lug_at.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192654_skachat_kontaktmaster_extra_polnaya_versiya_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188800_raspisanie_marshrutki_53_izhevsk_do_chekerila.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000241ac.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x241AC 3556 bytes
font_01_sfnt_off00024f2f.bin
d9458ba30139a857262259a97d3560fafa23cc1d08276d8285b50279a8faf319		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F2F 14648 bytes
font_02_sfnt_off00027c6d.bin
8c5e5bc4674cee60ec6c1619e60533ff44be00efca6b5f228c587d2f19a61a12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27C6D 14520 bytes
font_03_sfnt_off0002a73c.bin
59facb60b3015e5178b4f6bee483883711ae2f3d362f746adfffe43137f3f658		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A73C 6812 bytes
font_04_sfnt_off0002badc.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BADC 6084 bytes
font_05_sfnt_off0002ca71.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA71 3752 bytes

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