Malicious PDF — malware analysis report

Static analysis result for SHA-256 3da2c8d473111c56…

MALICIOUS

PDF

187.8 KB Created: 2015-07-24 08:41:44 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 23e3ada1e9234d0002299dc610ff7cce SHA-1: 4301b34e17c4b8a2e66aaca401a53b65df50f3ef SHA-256: 3da2c8d473111c56e80ec8a0dde4829745cc4c4065639445de80541933edfa90
92 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for containing a link to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to 'botcraftman.ru', which is associated with malicious redirectors. No scripts were extracted, and the document body was truncated, limiting further analysis of the exact lure. The primary attack vector appears to be directing the user to a malicious site via the embedded link.

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%98%D0%B3%D1%80%D1%83+%D0%B7%D0%BE%D0%BC%D0%B1%D0%B8+%D0%BF%D1%80%D0%BE%D1%82%D0%B8%D0%B2+%D1%80%D0%B0%D1%81%D1%82%D0%B5%D0%BD%D0%B8%D0%B9+2+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185275_prohozhdenie_igruy_stalker_chistoe_nebo_holodnaya_krov.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185655_warcraft_3_frozen_throne_skachat_po_pryamoy_ssuylke.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185890_nik_perumov_gibel_bogov_2_kniga_3_pepel_asgarda_skachat_fb2.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000249cf.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x249CF 3556 bytes
font_01_sfnt_off00025752.bin
37763293948009d7203bfc864ed4e66edcd0c85d435490636e2a5b928e5b164a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25752 15488 bytes
font_02_sfnt_off00028714.bin
dc0603461198d13c70e3cd7ff8c4ff7357f6ec2dbcd26aaa5e465a4d9e353451		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28714 14468 bytes
font_03_sfnt_off0002b1c9.bin
361ccf1e300ed8196da1a3074ae7377d1f7cb10695e0a34d794483811e9b4e6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B1C9 6868 bytes
font_04_sfnt_off0002c598.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C598 6084 bytes
font_05_sfnt_off0002d52d.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D52D 3752 bytes

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