Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed84d9862cb4b1c0…

MALICIOUS

PDF

187.0 KB Created: 2015-07-24 23:44:24 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e18a19aabb305e1240f33c1ef2d748c8 SHA-1: 4cf29bad33d2cd6a35fe30faf350033a62747662 SHA-256: ed84d9862cb4b1c0f563e9554c3fd2166d542b6b25d0f021c60f3359b9141b67
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 embedded URL `http://botcraftman.ru/...` is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution 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 0.9982

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%BA%D0%BE%D0%BC%D0%BF%D0%B0%D1%81-3d+v15+%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%B4%D0%BB%D1%8F+windows+7&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4195/4195766_avicenna_kniga_isceleniya_chitat.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191398_skachat_whatsapp_dlya_nokia_c500.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4194/4194761_kod_aktivacii_dlya_antivirusa_kasperskogo_2015.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002ab9c.bin
4286e178a47f016104537b814c2dc7a249eca7bc43781538b96625b894bdd0bd		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2AB9C 7612 bytes
font_00_sfnt_off00024510.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24510 3556 bytes
font_01_sfnt_off00025293.bin
22e06e010580de70b6a1090d49587fea4b902ad863972b5622a6499e642f95ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25293 14636 bytes
font_02_sfnt_off00027fd0.bin
c840475922a8c5d266b764d9124545846f0620e0ea22cb7c89b7dd8bbfb124ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27FD0 14812 bytes
font_04_sfnt_off0002c224.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C224 6084 bytes
font_05_sfnt_off0002d1b9.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D1B9 3752 bytes

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