Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea7eeb317db639cf…

MALICIOUS

PDF

183.3 KB Created: 2015-07-25 12:08:33 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 2ccfa65e3b85fdf37b6b1dff9d41288b SHA-1: 1ae0444ed7c6fcfc597d6c4b94e310d0b3cd1f95 SHA-256: ea7eeb317db639cf0079161ec95de3a9cff0ddfbe318600a593f70d6513077cf
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL, http://botcraftman.ru/, is the primary indicator of malicious intent, likely serving as a gateway to a phishing or malware distribution page. No scripts were extracted from this sample.

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=%D1%8D%D0%BC%D1%83%D0%BB%D1%8F%D1%82%D0%BE%D1%80+ios+%D0%B4%D0%BB%D1%8F+windows+7&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192988_skachat_programmu_dlya_vzloma_vkontakte.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4201/4201720_skachat_igru_dalnoboyschiki_5_cherez_torrent_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185013_protokol_o_smene_okvyed_obrazec.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a0b6.bin
91465256f701cd7bdcbd698990e116eb60c943be793a4e438d71b60a4acaba3b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A0B6 6588 bytes
font_00_sfnt_off00023a4c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23A4C 3556 bytes
font_01_sfnt_off000247cf.bin
409837aeddb2107419fe34ef3e396d7c2a51a5607be1d159dd90cb0665ebfca3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x247CF 14352 bytes
font_02_sfnt_off000274e1.bin
c773a900480ed2d18e2b3d8e9debd18d9e46b5f15b3fd3b2946cd836d8c32433		 pdf-font-stream PDF embedded font (sfnt) at offset 0x274E1 14812 bytes
font_04_sfnt_off0002b399.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B399 6084 bytes
font_05_sfnt_off0002c32e.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C32E 3752 bytes

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