Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e191651818cfd6f…

MALICIOUS

PDF

188.0 KB Created: 2015-07-23 20:17:57 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d72bbb775f979674db70d1a6b3da57fe SHA-1: 7924a746bfaf2ddec37be6d113c6259f0e243095 SHA-256: 5e191651818cfd6f9305847eece9a8fdc7d364b8ce9cc1d4603d1c7e486b067d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing indicating a malicious redirector link to 'http://botcraftman.ru/'. This suggests the document is designed to lure users to a potentially harmful website. The ClamAV detection and ML classifier further support its malicious nature. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

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-7494097-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7494097-0
  • 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%BB%D0%BE%D0%B4%D0%B5%D0%B6%D0%BA%D0%B0+1+%D1%81%D0%B5%D0%B7%D0%BE%D0%BD+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%D0%B2+%D1%85%D0%BE%D1%80%D0%BE%D1%88%D0%B5%D0%BC+%D0%BA%D0%B0%D1%87%D0%B5%D1%81%D1%82%D0%B2%D0%B5&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184350_yesse_po_obschestvu_primeruy.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184329_faction_fronts_clear_sky_v221_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184489_semago_diagnosticheskiy_albom_skachat_besplatno.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024a08.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24A08 3556 bytes
font_01_sfnt_off0002578b.bin
7cd5435ea00214785e930cdcd5cf83a69700d60d0d9659b2b79d805369446b0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2578B 15288 bytes
font_02_sfnt_off000286dd.bin
78d915df9d89ff72d71c6d9e64cec7f5e4ff45a319657566b73e727b88d0c245		 pdf-font-stream PDF embedded font (sfnt) at offset 0x286DD 14588 bytes
font_03_sfnt_off0002b1eb.bin
002eaa52d686f00ad7b85d93a9148ed73e55636a708741064359cefeb47dfc0b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B1EB 6992 bytes
font_04_sfnt_off0002c637.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C637 6084 bytes
font_05_sfnt_off0002d5cc.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D5CC 3752 bytes

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