Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccabefdb9815eade…

MALICIOUS

PDF

182.8 KB Created: 2015-08-05 16:27:16 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c3f237abe78802b7286c67dc3401c03b SHA-1: 775217f343bc30f942cff49d91e9e008fae2a3e8 SHA-256: ccabefdb9815eade200bafc6b95eed1d2047af5a3f6505b3fe7e58f7e1ef1fa5
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to botcraftman.ru. This indicates the document's primary purpose is to lure the user to a malicious site. ClamAV also detected this file as Pdf.Dropper.Agent-7631094-0, further confirming its malicious nature. The ML classifier also strongly flagged this PDF. No scripts were extracted, but the redirector is sufficient evidence of a malicious intent to deliver a payload or phish.

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.
  • ClamAV: Pdf.Dropper.Agent-7631094-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7631094-0
  • 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%BC%D0%BE%D0%B4%D1%8B+%D0%B4%D0%BB%D1%8F+fallout+3&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4306/4306083_skachat_the_binding_of_isaac_rebirth_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304587_kryak_na_football_manager_2015.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305476_grigoriy_leps_albom_parus_skachat_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000238df.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x238DF 3556 bytes
font_01_sfnt_off00024662.bin
99908e6af045c66cad52af4c9b3d7df7d31fb877d5dd29bbe3d714dd9d92c93e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24662 14752 bytes
font_02_sfnt_off000273e9.bin
0620e0d15c5347539fe5f91ba57a3be8b2b67cf12a020ae0cd82ccc4455f184b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x273E9 14676 bytes
font_03_sfnt_off00029f46.bin
2d639d189a98ad30a20466b2d895f58c7a2e2a391e93bd63823d5756424e971f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x29F46 6360 bytes
font_04_sfnt_off0002b154.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B154 6084 bytes
font_05_sfnt_off0002c0e9.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C0E9 3752 bytes

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