Malicious PDF — malware analysis report

Static analysis result for SHA-256 778c9e324e7e6086…

MALICIOUS

PDF

185.1 KB Created: 2015-07-24 11:51:18 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 71fe4d7acbc715e17663db0b97cc745c SHA-1: 7740b5316ea46fe315ec7732ed7889eac5c685d5 SHA-256: 778c9e324e7e608678e122249da8587d075e65101e43dae9f74fae0ff12d9fe9
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by multiple heuristics as malicious, specifically for containing a link to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL is likely part of a phishing or malware distribution chain, aiming to lure the user to a harmful 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%94%D1%80%D0%B0%D0%B9%D0%B2%D0%B5%D1%80+%D0%B4%D0%BB%D1%8F+%D0%B2%D0%BD%D0%B5%D1%88%D0%BD%D0%B5%D0%B3%D0%BE+%D0%B6%D0%B5%D1%81%D1%82%D0%BA%D0%BE%D0%B3%D0%BE+%D0%B4%D0%B8%D1%81%D0%BA%D0%B0+3q&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188341_karta_avtomobilnuyh_dorog_dalnego_vostoka.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185265_otvetuy_na_egye_po_biologii_2015.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191246_videopleer_dlya_nokia_5228.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000240d1.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x240D1 3556 bytes
font_01_sfnt_off00024e54.bin
6cf43ff12cfa1014abb14df03dde3f5510873bf3635686f411d617f18480b65a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E54 14368 bytes
font_02_sfnt_off00027b26.bin
cd4ecc66c857a0aea66b1487065b8b6f7295e6f13bc3a6677c905b416cbfbd5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B26 14668 bytes
font_03_sfnt_off0002a637.bin
f34e5f6a9927c9c48a0822d23523d583174db7bab647cd44cbd66aead7cb8989		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A637 7044 bytes
font_04_sfnt_off0002ba83.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BA83 6084 bytes
font_05_sfnt_off0002ca18.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA18 3752 bytes

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