Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e0c38c7afe545c4…

MALICIOUS

PDF

185.1 KB Created: 2015-07-25 06:23:04 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: f7ef5bfae606854a1a62a68144f682f1 SHA-1: 63132731937fda86989581eb1d456c6c087ab05b SHA-256: 6e0c38c7afe545c41b0121fb75f966cf12c1d9747d07dbfdf556ed4caf694c54
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link identified as a malicious redirector, which is a common technique for distributing malware or conducting phishing attacks. The document body, though heavily truncated and containing non-readable characters, originates from wkhtmltopdf, suggesting it might be a generated document. The presence of a malicious link strongly indicates an attempt to compromise the user.

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=Pioneer+mosfet+50wx4+%D0%B8%D0%BD%D1%81%D1%82%D1%80%D1%83%D0%BA%D1%86%D0%B8%D1%8F&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192228_skachat_serial_grimm_4_sezon_cherez_torrent_s_russkim_perevodom.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4193/4193302_garri_potter_i_kubok_ognya_igra_skachat_torrent_na_russkom.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187067_skachat_igru_moy_govoryaschiy_tom_na_kompyuter_cherez_torrent.pdf
    • http://www.microsoft.com/typography/fonts/You
    • http://www.microsoft.com/typography/fonts/

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a58d.bin
e874123c0e785d8021dded787d70fcd9b569eff8a8ef08bd773c04c0f77b0bd2
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A58D 7180 bytes
font_00_sfnt_off00023ddd.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281
pdf-font-stream PDF embedded font (sfnt) at offset 0x23DDD 3556 bytes
font_01_sfnt_off00024b60.bin
69b87be7bd56c298810d46a3c051885583302dea93ef5ba2a4649409c3190205
pdf-font-stream PDF embedded font (sfnt) at offset 0x24B60 14444 bytes
font_02_sfnt_off0002789c.bin
6ab69252736a9288bce66e401b4b52e595dc9d9d933e609c0a2711f312e596dc
pdf-font-stream PDF embedded font (sfnt) at offset 0x2789C 15296 bytes
font_04_sfnt_off0002ba7d.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3
pdf-font-stream PDF embedded font (sfnt) at offset 0x2BA7D 6084 bytes
font_05_sfnt_off0002ca12.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e
pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA12 3752 bytes