Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c141e68cc8e3d70…

MALICIOUS

PDF

186.0 KB Created: 2015-07-24 05:03:33 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 9846256fe167171b03c6a7784e1a22fa SHA-1: 08368f2038aac9c4faa0c6ee81de47024c295a46 SHA-256: 4c141e68cc8e3d709c7d41c31af511e407a369fbd25199ca822304c9e2f09ff4
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a critical heuristic indicating a link to known malicious redirector infrastructure. The embedded URL http://botcraftman.ru/... is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware download site. No scripts were extracted, and the document body was truncated, limiting further analysis of the specific lure.

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%80%D1%83%D1%81+%D1%82%D0%B2+%D0%BF%D0%BB%D0%B5%D0%B5%D1%80+26+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%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://img0.liveinternet.ru/images/attach/c/5//4188/4188282_skachat_prilozhenie_sberbank_onlayn_dlya_kompyutera.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184497_need_for_speed_most_wanted_limited_edition_2012_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184864_perevodnoy_yekzamen_po_matematike_5_klass.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000245c1.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x245C1 3556 bytes
font_01_sfnt_off00025344.bin
daa9563d78809475a2afa8886a95904284812d6986d212f3675fd4ccdbeb1828		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25344 14340 bytes
font_02_sfnt_off00027fcd.bin
10d92fc72fa65c85f2916647ed567b0bf307517e750443e3674b0598d6a9344e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27FCD 14468 bytes
font_03_sfnt_off0002aa80.bin
51041a92393d0fd35a1037602c7a97a47a13b451976877727e02e6148dc00226		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AA80 6836 bytes
font_04_sfnt_off0002be49.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BE49 6084 bytes
font_05_sfnt_off0002cdde.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CDDE 3752 bytes

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