Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bcac27e1abb2faf…

MALICIOUS

PDF

184.8 KB Created: 2015-08-06 21:54:58 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: f2c294fd8665cb10e1633e9cbade3c43 SHA-1: 11c50e00d6d8564b865259d322b56b0889aacc09 SHA-256: 3bcac27e1abb2fafc1fcadc12bb9dc55660942325e0507c49f3dbabf2331ee04
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF 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, and the document body was not parsable text, so the attack pattern is based solely on the malicious link.

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%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BC%D0%B0%D0%B9%D0%BD%D0%BA%D1%80%D0%B0%D1%84%D1%82+152+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D0%B7%D0%BE%D0%BD%D0%B0&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4321/4321924_nn17.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4318/4318427_skachat_truck_simulator_3d_na_android.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4306/4306506_primeruy_neosnovatelnogo_obogascheniya.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024027.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24027 3556 bytes
font_01_sfnt_off00024daa.bin
04a9aa4f3db76adb65fe61f52aba43382af29f9c1d77c9b16714d53568333d51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24DAA 14396 bytes
font_02_sfnt_off00027a9f.bin
d09923cbdc305950305c98b16fd731505617ef87fa48d967c0f3dc823af7b848		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27A9F 14640 bytes
font_03_sfnt_off0002a5d2.bin
14a32fb33b063c5446a804d49919ff124e68241e0fa71c6c29808a1a925ddff8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A5D2 6776 bytes
font_04_sfnt_off0002b97d.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B97D 6084 bytes
font_05_sfnt_off0002c912.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C912 3752 bytes

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