Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e57dc00c5b8acf3…

MALICIOUS

PDF

186.0 KB Created: 2015-07-24 11:21:57 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 0f78fadb0dba1e11ef34df15c1e60eb7 SHA-1: ba89c1cc72db199aa215851951fbbaf818b94225 SHA-256: 5e57dc00c5b8acf3566700ad08dd2b17c5aad5cce21726138b31335273ff8033
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged as malicious by an ML classifier and contains a link to known malicious redirector infrastructure. The embedded content suggests a lure for cracked software, indicating a phishing or malware distribution attempt. No scripts were extracted, but the presence of malicious links is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • 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.
  • PDF link farm advertises cracked/pirated software medium PDF_CRACKED_SOFTWARE_LURE
    PDF contains many clickable links whose targets use cracked-software, keygen, serial-key, or warez vocabulary. These are SEO-spam lure documents that rank for software-piracy searches and route users to fake 'crack' download pages distributing potentially-unwanted programs, adware, or droppers. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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%BF%D0%B0%D1%82%D1%87+%D0%B4%D0%BB%D1%8F+%D0%BF%D0%B5%D1%81+2014+%D1%80%D0%BF%D0%BB+%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://img0.liveinternet.ru/images/attach/c/5//4184/4184614_alena_kravchenko_videoshkola_igruy_na_gitare_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185592_skachat_igru_metal_gear_solid_3_cherez_torrent_na_pc.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184539_korol_i_shut_todd_akt_1_skachat_torrent.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000244bc.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x244BC 3556 bytes
font_01_sfnt_off0002523f.bin
e713dba60f06eca78ffc1b9d4998b313aab2412ce12e288a40b9a740f4165b90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2523F 14552 bytes
font_02_sfnt_off00027f69.bin
5b0c29db7642895d914e9503516beaff1663aaf355408ba3f797c73523165a05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27F69 14468 bytes
font_03_sfnt_off0002aa1f.bin
59f58c3e55e34991bfe72411e3023ecb084e91bec6a6fc3b954b97a39ab15c8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AA1F 6916 bytes
font_04_sfnt_off0002be3d.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BE3D 6084 bytes
font_05_sfnt_off0002cdd2.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CDD2 3752 bytes

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