Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7ffa7bc8e81ca37…

MALICIOUS

PDF

187.9 KB Created: 2015-07-24 07:37:26 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: bf275772ec8b4428367969df36071149 SHA-1: 580f7eb627db61bf8b2b1649996a9c43a35f8d52 SHA-256: f7ffa7bc8e81ca370d6cc6594c41264f85d1ef243fb9b35cf7edbcfcb45d0a21
90 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 embedded URL points to botcraftman.ru, which is associated with malicious redirects. No scripts were extracted from this sample, 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+%D1%81%D0%B5%D1%80%D0%B8%D0%B0%D0%BB+%D1%84%D0%B8%D0%B7%D1%80%D1%83%D0%BA+2+%D1%81%D0%B5%D0%B7%D0%BE%D0%BD+%D0%B2%D1%81%D0%B5+%D1%81%D0%B5%D1%80%D0%B8%D0%B8+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+20+%D1%81%D0%B5%D1%80%D0%B8%D0%B9&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189797_instrukciya_po_yekspluatacii_toyota_prius_30_na_russkom.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188709_vruchenie_attestatov_v_9_klasse_scenariy.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187160_skachat_filmuy_v_full_hd_kachestve_besplatno_cherez_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024a5a.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24A5A 3556 bytes
font_01_sfnt_off000257dd.bin
e0aeca6eee010831d86aacacc0ceb2f2fa2eddad58bfe8cba8761acb8edff0ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x257DD 14988 bytes
font_02_sfnt_off000286b0.bin
f332f630edb11f2652521b1ca682850710077f109e9c98e99461c31fd4619328		 pdf-font-stream PDF embedded font (sfnt) at offset 0x286B0 14468 bytes
font_03_sfnt_off0002b166.bin
9c77bd856bd356fde2555bb8e6a5718fcc7a35b4ce287b813687a93d13c27dfc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B166 7060 bytes
font_04_sfnt_off0002c5fb.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C5FB 6084 bytes
font_05_sfnt_off0002d590.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D590 3752 bytes

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