Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2912ced3f703eb4…

MALICIOUS

PDF

185.6 KB Created: 2015-07-24 11:35:49 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 10351a0e979816d7a03ce1faca203df2 SHA-1: 8306fd1701296cfdb7ebfcaf8393c7e227385fc6 SHA-256: f2912ced3f703eb44f7d0273706dd786b9908821f94841804205645e212852b5
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 link to a known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to 'botcraftman.ru', which is associated with malicious redirection. No scripts were extracted, but the presence of the malicious link strongly suggests a phishing or malware distribution 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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%81%D0%B1%D0%BE%D1%80%D0%BD%D0%B8%D0%BA+%D1%82%D0%B5%D0%BC+%D0%B4%D0%BB%D1%8F+windows+7+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%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//4191/4191848_sudden_strike_3_arms_for_victory_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185414_skachat_presetuy_dlya_izotope_ozone_5.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189553_plaschi_dlya_minecraft_64x32_png_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a699.bin
aca139515c8ff60d5b90ecc2db37994e624561ec25e403d59f2c3f08442046a2
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A699 7524 bytes
font_00_sfnt_off00024105.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281
pdf-font-stream PDF embedded font (sfnt) at offset 0x24105 3556 bytes
font_01_sfnt_off00024e88.bin
e2bdbf72c2e079cfde78480e2e2083c8f0ffaaf79edfbbb6c8dd0e758d8c9de1
pdf-font-stream PDF embedded font (sfnt) at offset 0x24E88 14564 bytes
font_02_sfnt_off00027b79.bin
9d90e18ee50434addfa8c210065a1461feda93b1cad23cebf91f15991c29ade2
pdf-font-stream PDF embedded font (sfnt) at offset 0x27B79 14584 bytes
font_04_sfnt_off0002bcc5.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3
pdf-font-stream PDF embedded font (sfnt) at offset 0x2BCC5 6084 bytes
font_05_sfnt_off0002cc5a.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e
pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC5A 3752 bytes