Malicious PDF — malware analysis report

Static analysis result for SHA-256 f17b5f722bf4aa28…

MALICIOUS

PDF

390.9 KB Created: 2015-08-21 09:24:30 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: e8d05709519ef2c8ab7bb3ad4a3ab89f SHA-1: 736017dee027906df9caeffc077aed27f00e2aa2 SHA-256: f17b5f722bf4aa285e62c79598a17d8121cff4daf9e2f907fe7262682a26fa36
92 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 strongly indicated maliciousness. The embedded URL points to 'botcraftman.ru', which is associated with malicious activity. No scripts were extracted, and the document body was largely unreadable, but the presence of the malicious link is sufficient evidence of a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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%B5%D1%80%D0%B8%D0%B0%D0%BB+%D1%83%D0%BB%D0%B8%D1%86%D1%8B+%D1%80%D0%B0%D0%B7%D0%B1%D0%B8%D1%82%D1%8B%D1%85+%D1%84%D0%BE%D0%BD%D0%B0%D1%80%D0%B5%D0%B9+1+%D1%81%D0%B5%D0%B7%D0%BE%D0%BD+%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://img0.liveinternet.ru/images/attach/c/6//4654/4654715_shutochnoe_pozdravlenie_na_yubiley_ot_kitaycev.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654834_euro_truck_simulator_2_kod_aktivacii.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654806_vvodnuyy_urok_obschestvoznanie_5_klass_bogolyubov_fgos.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005d13e.bin
58975794502e55e582ee47f23bccb36597f68ef532e4b1395f58aeb386c9b10d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D13E 9460 bytes
font_01_sfnt_off0005ebac.bin
49247c9f6c6f6915ba58c141d88a489078e820b4a67c99358d0c67e06a6a88da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EBAC 15552 bytes

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