Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fc29645f11f0f8b…

MALICIOUS

PDF

185.3 KB Created: 2015-08-08 10:48:44 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 17ef487ba6ac4caeecc66c54239a7bd8 SHA-1: 0d41258afa4ec51de119191dac9f27320f740254 SHA-256: 7fc29645f11f0f8bc8b11fb0e2d3532edc56a09ecd78394b18a301d908d1d1b1
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 assigned a high probability of maliciousness. The embedded URL points to botcraftman.ru, which is identified as a malicious redirector. This suggests the document's primary purpose is to lure the user to a malicious site.

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%B0%D0%BA+%D0%BF%D0%B5%D1%80%D0%B5%D0%BF%D1%80%D0%BE%D1%88%D0%B8%D1%82%D1%8C+%D0%BF%D0%BB%D0%B0%D0%BD%D1%88%D0%B5%D1%82%D0%BD%D0%B8%D0%BA+%D0%BD%D0%B0+android&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385869_olimpiada_po_obzh_9_klass_s_otvetami_2013_26_oktyabrya.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384748_smotret_multfilmuy_dlya_vrozsluyh_krasnaya_shapochka.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384937_bot_dlya_tyuryagi_na_rubli.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024179.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24179 3556 bytes
font_01_sfnt_off00024efc.bin
706065c96267b7b3559b5d234309ad7b8bec242014973c20d46a5dc4457ded31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24EFC 14900 bytes
font_02_sfnt_off00027d2a.bin
d9775475238cab7937fa4e35d65fbe93a357e8a9e242d68b4cc886ecd1dec298		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D2A 14520 bytes
font_03_sfnt_off0002a7f9.bin
19d40d7d7cde0a127136c8900d177fb0d76557638c47cbd9a44876b3a1aca2be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A7F9 6868 bytes
font_04_sfnt_off0002bb95.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BB95 6084 bytes
font_05_sfnt_off0002cb2a.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB2A 3752 bytes

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