Malicious PDF — malware analysis report

Static analysis result for SHA-256 65a85b7b07683c09…

MALICIOUS

PDF

188.0 KB Created: 2015-07-25 02:33:56 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: de80936a7f96f1dbce7f76132cb81da0 SHA-1: d72b4838024777484156d19d520e0cc10d13457e SHA-256: 65a85b7b07683c098320713c07e0f721154afed17edab1fe8be4d0581a1bffaf
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link pointing to botcraftman.ru. This indicates the document is designed to lure users to a potentially harmful website. The ML classifier and ClamAV detection further support its malicious nature, classifying it as a Pdf.Dropper.Agent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-7494118-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7494118-0
  • 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=plague+inc+%D0%BD%D0%B0+%D0%BA%D0%BE%D0%BC%D0%BF%D1%8C%D1%8E%D1%82%D0%B5%D1%80+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC+%D0%BF%D0%BE%D0%BB%D0%BD%D0%B0%D1%8F+%D0%B2%D0%B5%D1%80%D1%81%D0%B8%D1%8F&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191321_oformlenie_otryadnogo_ugolka_v_lagere_shablonuy.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190883_skachat_igru_mount_blade_ognem_i_mechom.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185995_tamara_lisickaya_idiotki_skachat_besplatno.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002488d.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2488D 3556 bytes
font_01_sfnt_off00025610.bin
3c77f79048ae2c220dcd2acd1423f98f2b2bf2fa4abca51c6d65282e65d4582a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25610 14988 bytes
font_02_sfnt_off0002847a.bin
aff699d8f599f06be927e2e666f63edc12da4545198e995a52d929240d6d1e14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2847A 14608 bytes
font_03_sfnt_off0002af35.bin
e2a07b5b4e04c6e8839c061699174ea801c0963b4c5e40dfc9dae6571b3bccba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AF35 7720 bytes
font_04_sfnt_off0002c604.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C604 6084 bytes
font_05_sfnt_off0002d599.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D599 3752 bytes

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