Malicious PDF — malware analysis report

Static analysis result for SHA-256 e17837065d51ee2d…

MALICIOUS

PDF

185.0 KB Created: 2015-08-06 16:07:25 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a1879dcddcf507267b381b0defd12e64 SHA-1: b68337f33088977a43901540c7b57bf7dd0eaf39 SHA-256: e17837065d51ee2d6842070d6bc90d8a62cc97c7c46733728ce499d608fdd374
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 containing a malicious redirector link. The ML classifier also strongly indicated maliciousness. The embedded URL points to botcraftman.ru, which is known malicious infrastructure. No scripts were extracted, but the presence of a malicious link suggests a phishing or redirection attempt.

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%D1%80%D1%82%D0%B0+%D0%B4%D0%BB%D1%8F+%D0%BC%D0%B0%D0%B9%D0%BD%D0%BA%D1%80%D0%B0%D1%84%D1%82+152+%D0%B3%D0%BE%D1%80%D0%BE%D0%B4&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4311/4311331_klipuy_shansona_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305597_skachat_nvidia_geforce_8500_gt_drayvera.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4310/4310220_kod_kbk_2015.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023f7e.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23F7E 3556 bytes
font_01_sfnt_off00024d01.bin
cd07c2bd62519e15cac2d25b43b87d3e68eb7721fbe37c19ea2960b3ffbf017d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24D01 15064 bytes
font_02_sfnt_off00027b77.bin
cfe700f2d36c9099e036fab54dcb7a869333f3c3c99075ac04c4f40eaea759a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B77 14640 bytes
font_03_sfnt_off0002a6a8.bin
d84ad72bb92ebb4078844c0dae99f9bf251b080bad60a800ad6b2f18acf64898		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A6A8 6764 bytes
font_04_sfnt_off0002ba2e.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BA2E 6084 bytes
font_05_sfnt_off0002c9c3.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C9C3 3752 bytes

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