Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa4b0cb46b59de96…

MALICIOUS

PDF

185.5 KB Created: 2015-08-05 13:43:38 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c5536dd530847fb37b35df73e1d76b50 SHA-1: 5b1833728d09bd0f212fa76856b96c4f7cf825a3 SHA-256: fa4b0cb46b59de96c30f7119fcbf29a256161d4ffb00d9be8d384c8b692700b1
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/..., is highly suspicious and likely serves as a lure to a phishing or malware distribution site. No scripts were extracted, but the presence of the malicious link is sufficient evidence of malicious intent.

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+%D0%B2%D0%B8%D0%BD%D0%B4%D0%BE%D0%B2%D1%81+%D1%85%D0%BF+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%D1%81+%D0%B4%D1%80%D0%B0%D0%B9%D0%B2%D0%B5%D1%80%D0%B0%D0%BC%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304672_pokaz_mod_v_lagere.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304553_doklad_na_temu_istoriya_izobreteniya_turbin.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304630_dreamfall_chapters_book_one_reborn_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024285.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24285 3556 bytes
font_01_sfnt_off00025008.bin
1ce16fe52f8dcd0d1deb880ca16bbcf275843ac361f805b30df3e3efec0a9f3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25008 14728 bytes
font_02_sfnt_off00027d8f.bin
a6626c0bd3595dc776735a93968cf26fa9368d0e017313712711ccf7ec06347e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D8F 14532 bytes
font_03_sfnt_off0002a87f.bin
43335dfaa869423aa7da2e459a2bcd14a100576b1c02b06635b164a8b4911023		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A87F 6852 bytes
font_04_sfnt_off0002bc42.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BC42 6084 bytes
font_05_sfnt_off0002cbd7.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CBD7 3752 bytes

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