Malicious PDF — malware analysis report

Static analysis result for SHA-256 cffdb80e53e9da4a…

MALICIOUS

PDF

186.8 KB Created: 2015-08-06 17:06:36 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ea6d85da44d9f8e5579850002c3562db SHA-1: acffc443820c227c7a12c647905073aa31e3d736 SHA-256: cffdb80e53e9da4a472f6fbf4d6d57c3e3c1747f762c8e1e121f1cabee10266d
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 linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The primary IOC is the malicious URL embedded within the document, which is likely used to redirect users to a harmful site. No scripts were extracted, and the document body was truncated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%B1%D0%B0%D1%80%D0%B1%D0%B8+%D0%BF%D1%80%D0%B8%D0%BA%D0%BB%D1%8E%D1%87%D0%B5%D0%BD%D0%B8%D1%8F+%D0%BD%D0%B0+%D1%80%D0%B0%D0%BD%D1%87%D0%BE+%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/6//4306/4306899_serial_perevodchik_soderzhanie.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305434_myerilin_monro_zhizn_rasskazannaya_eyu_samoy_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4311/4311951_skachat_nod_32_besplatno_bez_registracii_i_sms.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002484c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2484C 3556 bytes
font_01_sfnt_off000255cf.bin
af427268f4f9af665f8a804fafb29ec05163bc80bd29497db611e53abc614a42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x255CF 14372 bytes
font_02_sfnt_off00028306.bin
4ae165705ecc41720893a92c6e94e3ee89b3be36a12e4a920505046f59c61edc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28306 14468 bytes
font_03_sfnt_off0002adb4.bin
499b419bb6af5bfa54ffce7b9871b8e2bf6934851f13b9e89a19b1682b68b0da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ADB4 6884 bytes
font_04_sfnt_off0002c196.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C196 6084 bytes
font_05_sfnt_off0002d12b.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D12B 3752 bytes

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