Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff8bf4c6bb413075…

MALICIOUS

PDF

186.6 KB Created: 2015-07-24 04:12:02 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 1afa26665bffd7bc9063061eefe93ee7 SHA-1: 98493cf8760de98644719209eb385d175c621dc4 SHA-256: ff8bf4c6bb41307517d313ab62f8c4fc2222fe94796d9b2a56ce3f4f10634092
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 containing a link to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL `http://botcraftman.ru/?lip&keyword=%D0%B1%D0%B5%D0%B2%D0%B5%D1%80%D0%BB%D0%B8+%D1%85%D0%B8%D0%BB%D0%B7+90210+1+%D1%81%D0%B5%D0%B7%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&charset=utf-8` is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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=%D0%B1%D0%B5%D0%B2%D0%B5%D1%80%D0%BB%D0%B8+%D1%85%D0%B8%D0%BB%D0%B7+90210+1+%D1%81%D0%B5%D0%B7%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&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184699_windows_7_maksimalnaya_skachat_torrent_64_bit.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186804_skachat_gta_san_andreas_dlya_vindovs_8.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185625_vtoraya_svadba_skachat_cherez_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024503.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24503 3556 bytes
font_01_sfnt_off00025286.bin
f960d2fa607da81dbdef6d6fcd1debf6698cc818eacfc0c18cea0dc50bff84db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25286 14844 bytes
font_02_sfnt_off00028170.bin
205bb41d25892212b8d846db2a9679b6485882be683a2eb92d89c33953c45fe0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28170 14532 bytes
font_03_sfnt_off0002ac64.bin
d155164017460d8ac580680ad38b1da34f169abd84462c7093cf5d24032ac53e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AC64 6960 bytes
font_04_sfnt_off0002c09f.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C09F 6084 bytes
font_05_sfnt_off0002d034.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D034 3752 bytes

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