Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c8c97e2553b1b32…

MALICIOUS

PDF

187.2 KB Created: 2015-08-05 13:18:30 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 099d23f4e12156104677033ea69f91a5 SHA-1: 32779f7da5e691f53e2eb11469c1444097e717e9 SHA-256: 7c8c97e2553b1b320e9f30868afbc11af0ba82b1426c4f5cfcd60060f184d1de
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, including a critical alert for a redirector link to botcraftman.ru. ClamAV also detected it as Pdf.Dropper.Agent-7487466-0. The embedded URL points to a known malicious redirector, indicating the file's purpose is to lure users to a harmful site. No scripts were extracted from this sample.

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-7487466-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7487466-0
  • 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%B1%D0%B0%D0%BD%D0%B3%D0%BA%D0%BE%D0%BA+%D1%85%D0%B8%D0%BB%D1%82%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/6//4304/4304432_skachat_stalker_voron_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304431_payday_2_skachat_torrent_na_russkom_ot_mehanikov.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304430_skachat_igru_luntik_uchitsya_risovat_cherez_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024883.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24883 3556 bytes
font_01_sfnt_off00025606.bin
885418e03b8f7532542be687727c3495ef833b6d418fd45b81205c42778fce5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25606 15220 bytes
font_02_sfnt_off000284c1.bin
d3cf3744de2b9a2c1da18303b1d4efd2fb54a3b281cba5658dfa01c44adb3a29		 pdf-font-stream PDF embedded font (sfnt) at offset 0x284C1 14588 bytes
font_03_sfnt_off0002afd3.bin
a0af420c5a880cb037291941822ac7e32a234b50e5a06258a8f31ca8265269f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AFD3 6684 bytes
font_04_sfnt_off0002c2f6.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C2F6 6084 bytes
font_05_sfnt_off0002d28b.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D28B 3752 bytes

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