Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc4a6279c3f79f22…

MALICIOUS

PDF

187.8 KB Created: 2015-07-24 04:54:46 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d4bfd86524dbece2313c571749f21043 SHA-1: e560169fc44c44fc5ff4815bd98cb3c3aebcb534 SHA-256: cc4a6279c3f79f22c4ca9f2542d29e97270e3d2f10a03a09eebd72e3ebcd3e65
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical finding for a malicious redirector link. The embedded URL points to botcraftman.ru, which is identified as malicious infrastructure. ClamAV also detected the file as Pdf.Dropper.Agent-7494838-0. The primary attack pattern involves redirecting the user to this malicious domain, likely to deliver a secondary payload or conduct a phishing operation.

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-7494838-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7494838-0
  • 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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B8%D0%BD%D0%B4%D0%B8%D0%B9%D1%81%D0%BA%D0%B8%D0%B9+%D1%84%D0%B8%D0%BB%D1%8C%D0%BC+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%B8+%D0%B1%D0%B5%D0%B7+%D1%80%D0%B5%D0%B3%D0%B8%D1%81%D1%82%D1%80%D0%B0%D1%86%D0%B8%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184364_prohozhdenie_stalker_zateryannuyy_mir.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184631_rus02192012nm3_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186164_shablon_tablichki_esli_vam_meshaet_moy_avtomobil_raspechatat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024a2d.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24A2D 3556 bytes
font_01_sfnt_off000257b0.bin
bb8d00452dd48c3386f1fa3cadf2296e55e3e2f84eb3985719fb4daf87259ed0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x257B0 14716 bytes
font_02_sfnt_off000285b0.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x285B0 14468 bytes
font_03_sfnt_off0002b062.bin
95c23597f98a34d217f3277dd900248fe4c80656daf5d71fa3e5cecde0ea56d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B062 7160 bytes
font_04_sfnt_off0002c53a.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C53A 6084 bytes
font_05_sfnt_off0002d4cf.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D4CF 3752 bytes

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