Malicious PDF — malware analysis report

Static analysis result for SHA-256 33c091b3f0df303d…

MALICIOUS

PDF

186.6 KB Created: 2015-07-25 18:53:20 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 4f326bb4f2f11754d74d4c5b64c24479 SHA-1: 4fea8eef0ffe800c0cb15b05e4d6a609ca6239d9 SHA-256: 33c091b3f0df303de7107285ab5064eb57bdb07e8e1671a4a64022679cb43900
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to botcraftman.ru. ClamAV also detected it as Pdf.Dropper.Agent-7495225-0. The embedded URL is likely used to deliver a second-stage payload or redirect to a phishing site. No scripts were extracted, but the PDF structure and the malicious URL are strong indicators of a dropper or downloader.

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-7495225-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7495225-0
  • 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%B3%D1%80%D1%83+%D0%BA%D0%B0%D0%B7%D0%B0%D0%BA%D0%B8+3+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4204/4204552_koduy_na_kristalluy_v_tankah_onlayn.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4196/4196432_pin_koduy_na_varfeys_2015_aprel.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190107_porno_3_d_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002481c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2481C 3556 bytes
font_01_sfnt_off0002559f.bin
80a909b8907b44539d335566d14aba511dab009c95de1598b61b00789e50e03e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2559F 14640 bytes
font_02_sfnt_off0002839a.bin
8fcb0373def2089f4050d604114efab1fb90fd41090bcaab965e0072af246115		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2839A 14468 bytes
font_03_sfnt_off0002ae46.bin
5c9c7067e4521333874f02e03d276b144d7eba2e763cf06733d39964c9f34664		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AE46 6464 bytes
font_04_sfnt_off0002c0b7.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C0B7 6084 bytes
font_05_sfnt_off0002d04c.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D04C 3752 bytes

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