Malicious PDF — malware analysis report

Static analysis result for SHA-256 10a0807256245d96…

MALICIOUS

PDF

185.4 KB Created: 2015-08-08 09:42:55 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a6a5f31d4c0b3e2c9e95f4d37aa3013f SHA-1: 5e27fc4de3527de24cada0892f2c999c068dab23 SHA-256: 10a0807256245d96fc36db71955e8d67e52127d752b6ede3e06dd438bbb35c45
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a critical heuristic for linking to a known malicious redirector. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the presence of the malicious URL suggests an attempt to lure the user to a harmful site, likely for phishing or malware distribution. The document body appears to be malformed or truncated, preventing further analysis of its content.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+simcity+4+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383717_skachat_igru_chelovek_pauk_drug_ili_vrag_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384134_trudovoy_dogovor_s_voditelem_yekspeditorom.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383761_kak_sdelat_telezhku_pod_naduvnuyu_lodku.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_off0002a7b8.bin
866afe086f666f22c121e82772ca2e158765fe026f6cef45da9d078348d43391		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A7B8 6964 bytes
font_00_sfnt_off000241fe.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x241FE 3556 bytes
font_01_sfnt_off00024f81.bin
b2004da899fc080405a7cb0d87fd35723ab2173610bb02580f2e65785f2169ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F81 14256 bytes
font_02_sfnt_off00027c30.bin
df49de3bcd70183471b7d598e8ed5e0a986c065125d22944eefb8deae690b18c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27C30 14744 bytes
font_04_sfnt_off0002bbf0.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BBF0 6084 bytes
font_05_sfnt_off0002cb85.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB85 3752 bytes

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