Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e1a3af5f78007b0…

MALICIOUS

PDF

185.6 KB Created: 2015-07-23 19:40:37 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 0527774d11ba3e5621308a1bb2437e66 SHA-1: b5a8d7d5c7f387f6787f3cb8e30132c1610b6427 SHA-256: 3e1a3af5f78007b0b85d662a08af9846e20071f29c39d5d18f7e5782f1df65ce
90 Risk Score

Malware Insights

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

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to botcraftman.ru, which is associated with malicious redirects. No scripts were extracted, but the presence of the malicious link is sufficient to indicate a likely phishing or malware delivery attempt.

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%BF%D0%BE%D1%82%D1%80%D0%BC-016-2001+%D1%81+%D0%B8%D0%B7%D0%BC%D0%B5%D0%BD%D0%B5%D0%BD%D0%B8%D1%8F%D0%BC%D0%B8+2015+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183247_antenna_fuksa_shema_i_opisanie.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184281_skachat_prilozhenie_sberbank_onlayn_na_kompyuter.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183249_proekt_po_fizicheskoy_kulture.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024283.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24283 3556 bytes
font_01_sfnt_off00025006.bin
48b8b257ca0a87d9ce96305fc154458ad4d1822b9a11ae83ad6a8d2fb88b1c22		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25006 14320 bytes
font_02_sfnt_off00027cec.bin
c79b707209df3f32c64f6c8289266d281da141e49b50f850efdbb0e10b07ef44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27CEC 14640 bytes
font_03_sfnt_off0002a822.bin
f02dfc6d5d05dd9b23eefc4fa4ea9902284eaea8a8c3603a8d01efcfe77d8ddb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A822 6988 bytes
font_04_sfnt_off0002bc7e.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BC7E 6084 bytes
font_05_sfnt_off0002cc13.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC13 3752 bytes

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