Malicious PDF — malware analysis report

Static analysis result for SHA-256 66338938645cd1d9…

MALICIOUS

PDF

182.6 KB Created: 2015-07-25 09:19:24 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 324e5c794807c4b5edd81f075ba80361 SHA-1: 40fc00f897a71f141cd25afc1a2a047d9ca31403 SHA-256: 66338938645cd1d9a10a3762b05fb35624275dcb608ecf650b9bc7c4aa67df47
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/, is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and the presence of embedded URLs suggest an attempt to lure the user to a malicious website, likely for phishing or malware delivery.

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=ios+7+%D0%BD%D0%B0+iphone+3gs&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4194/4194014_skachat_gamedata_dlya_stalker_chistoe_nebo.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187958_sains_rov_4_koduy.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4202/4202337_skachat_serial_spartak_bogi_arenuy_cherez_torrent_vse_serii.pdf
    • http://www.microsoft.com/typography/fonts/You
    • http://www.microsoft.com/typography/fonts/

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off00029e66.bin
7a8ee9f006392a447b7a370e3d07920ae4a641192d11bc65ea2d7cfb330ee4e7		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x29E66 6456 bytes
font_00_sfnt_off000237d9.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x237D9 3556 bytes
font_01_sfnt_off0002455c.bin
62be6a282a51500b7e49cb6913082992b7606bc9a3f4c7e574150afcec94695c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2455C 14968 bytes
font_02_sfnt_off00027364.bin
fc3bd000dd4a72edde16b4ef2d596ad54d46b3e8810cbf42c470bc530d970f7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27364 14612 bytes
font_04_sfnt_off0002b097.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B097 6084 bytes
font_05_sfnt_off0002c02c.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C02C 3752 bytes

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