Malicious PDF — malware analysis report

Static analysis result for SHA-256 eee149a6a7c1fb6f…

MALICIOUS

PDF

186.2 KB Created: 2015-07-24 11:28:05 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 2693997fedbae1381f7ba4dd8780257e SHA-1: 57ce3e0cfc880b26f166d4ed8d3840f2e0baf347 SHA-256: eee149a6a7c1fb6f346c07ea35867917c34779c63aa722f6bb921aa390785762
92 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The embedded URL, 'http://botcraftman.ru/...', appears to be a lure for users searching for Windows 7 activation keys. The ML classifier also strongly indicated maliciousness. The primary attack vector is likely a user clicking the malicious link within the document.

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%B2%D0%B5%D0%B6%D0%B8%D0%B5+%D0%BA%D0%BB%D1%8E%D1%87%D0%B8+%D0%B0%D0%BA%D1%82%D0%B8%D0%B2%D0%B0%D1%86%D0%B8%D0%B8+windows+7+ultimate&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184899_skachat_serial_vikingi_vse_sezonuy_cherez_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191272_obrazec_rezyume_skachat_shablon.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188319_kapa_2015_novuyy_albom_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a8a4.bin
ce6a621b816e5d0514f6bc1a54717887b6702da49ac79e14a2731cbf007eddcc		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A8A4 7540 bytes
font_00_sfnt_off000241bd.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x241BD 3556 bytes
font_01_sfnt_off00024f40.bin
4c3c6eb833475095be9ae0dd2113b49a710cb5cc0a366308371ac2597633df76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F40 14712 bytes
font_02_sfnt_off00027cb3.bin
9a4a70bed36ea795d2e8d7b23d84c97912ac7051430b8aa90acffb5bc444a09c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27CB3 14864 bytes
font_04_sfnt_off0002bed3.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BED3 6084 bytes
font_05_sfnt_off0002ce68.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE68 3752 bytes

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