Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbe5dcb32263e374…

MALICIOUS

PDF

188.3 KB Created: 2015-07-24 12:55:12 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: eeda3a9463de0fb5025daf4df18208be SHA-1: 8588ed444d042183f1eddf8ce5eeaa0157d09f0a SHA-256: cbe5dcb32263e374efbae87029acc562875ba4a7af4754ee04966f874de94921
90 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, http://botcraftman.ru/. This indicates an attempt to lure the user to a malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence of malicious intent.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B8%D0%B3%D1%80%D1%83+%D0%BD%D1%85%D0%BB+14+%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+%D0%BA%D0%BE%D0%BC%D0%BF%D1%8C%D1%8E%D1%82%D0%B5%D1%80+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186432_tna_impact_pc_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185072_skachat_removewat_dlya_windows_7_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192456_instrukciya_po_yekspluatacii_telefona_panasonic_kx_tga250ru.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024cac.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24CAC 3556 bytes
font_01_sfnt_off00025a2f.bin
65b1539f3a5031b42bc96ff515e63ac0c5d97c1feb12a69f0e10a36e2b16eeac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25A2F 14696 bytes
font_02_sfnt_off00028796.bin
aa3c4579ad50ac1b80dda7ce70444cb13b157ae6c7e56ed406109c153f1841d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28796 14532 bytes
font_03_sfnt_off0002b286.bin
88e74f0ec00ac29d291ade711de5de4a50f185cd6d9ccf1ce922f84d7524e316		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B286 7128 bytes
font_04_sfnt_off0002c75f.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C75F 6084 bytes
font_05_sfnt_off0002d6f4.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D6F4 3752 bytes

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