Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5ea645c45b15867…

MALICIOUS

PDF

184.5 KB Created: 2015-08-03 16:46:56 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: dbc0abcb10fee19a1b3d856ce88bb6f3 SHA-1: 6d2d1c9aae8b7f04f7e1969327426a99eb45c4c4 SHA-256: b5ea645c45b158675dadbae8fbbc574ab00b21960a40e0aaa46b2b7d27fb9493
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The 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 not parsable.

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%B8%D0%BD%D0%B4%D0%B8%D0%B9%D1%81%D0%BA%D0%B8%D0%B5+%D0%BA%D0%BB%D0%B8%D0%BF%D1%8B+%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/6//4279/4279967_a_sviyash_karma_ispravlyaem_oshibki_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4210/4210151_skachat_windows_8_ultimate_64_bit_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4237/4237291_skachat_kartuy_na_maynkraft_162_na_prohozhdenie_na_russkom.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002413d.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2413D 3556 bytes
font_01_sfnt_off00024ec0.bin
c3eefeb536abe3db44d4e378a1199753c590e6013115f715d44a89d91f07f0e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24EC0 14480 bytes
font_02_sfnt_off00027c1f.bin
d22647a20bdf7fdf39209c54252ae5535b39cfb889418d78aaf9459f7adfd96a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27C1F 14468 bytes
font_03_sfnt_off0002a6d4.bin
5aeb8667d6249f6df246813fc5854dfb316a9e6813be756c112f15a659237cf8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A6D4 6208 bytes
font_04_sfnt_off0002b830.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B830 6084 bytes
font_05_sfnt_off0002c7c5.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C7C5 3752 bytes

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