Malicious PDF — malware analysis report

Static analysis result for SHA-256 fce661dff95b30aa…

MALICIOUS

PDF

186.5 KB Created: 2015-08-05 13:32:25 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ecc6fcc33c57f0105babf759457a57d5 SHA-1: 6abeab50efcf8a1fdb6070d2f3059faebcbf3cab SHA-256: fce661dff95b30aa774f2ef0df7cf6ed0c5ffdc813c02ca4d3a8d660622a09cc
92 Risk Score

Malware Insights

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

The PDF document was flagged by a critical heuristic for containing a link to known malicious redirector infrastructure. An 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 lure to a phishing or malware distribution site. No scripts were extracted, and the document body was truncated, limiting further analysis.

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+%D0%B8%D0%B3%D1%80%D1%83+18+%D1%81%D1%82%D0%B0%D0%BB%D1%8C%D0%BD%D1%8B%D1%85+%D0%BA%D0%BE%D0%BB%D0%B5%D1%81+%D0%BF%D0%BE+%D0%B4%D0%BE%D1%80%D0%BE%D0%B3%D0%B0%D0%BC+%D1%83%D0%BA%D1%80%D0%B0%D0%B8%D0%BD%D1%8B&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304554_igrat_sims_4_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304578_blagodarstvennoe_pismo_studentu_obrazec.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304539_skachat_lovi_v_kontakte_cherez_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024693.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24693 3556 bytes
font_01_sfnt_off00025416.bin
a67bb64e217f49fdf563fd9601fb5488d5a0b6c41b97da36d9528f50d991388c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25416 14212 bytes
font_02_sfnt_off00028091.bin
cc89568594106d53ebf5ef0aef853d000668570d0d7c5223eb4ee066651795e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28091 14532 bytes
font_03_sfnt_off0002ab81.bin
f725f8e10070766026814096095963a950830a792d96144b73db227582a7930d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AB81 7024 bytes
font_04_sfnt_off0002c000.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C000 6084 bytes
font_05_sfnt_off0002cf95.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF95 3752 bytes

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