Malicious PDF — malware analysis report

Static analysis result for SHA-256 355fe3ec035bc4af…

MALICIOUS

PDF

187.3 KB Created: 2015-07-27 18:57:56 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: cbd3709bf658f77a3062baae7c7dcf21 SHA-1: 403e842b9f343e06c73b31dd2f990e26877a71b6 SHA-256: 355fe3ec035bc4afe98d0dab5e6e8e96908b4f27a68c9547965609a0df25e142
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=euro+truck+simulator+2+%D0%B7%D0%B0+%D1%80%D1%83%D0%BB%D0%B5%D0%BC+%D0%BF%D0%BE+%D1%80%D0%BE%D1%81%D1%81%D0%B8%D0%B8+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4198/4198663_skachat_maykravt_ustanovku_125_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4194/4194890_shpargalki_po_biologii_egye_2015.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4210/4210171_ostrov_nenuzhnuyh_lyudey_2_sezon_skachat_torrent_vse_serii.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002acbb.bin
5e2c1e35299e7d6db504aa4ef603a9596c383ea77e5ad12ecb410abbd5b19f6e		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2ACBB 7664 bytes
font_00_sfnt_off00024698.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24698 3556 bytes
font_01_sfnt_off0002541b.bin
1cb2c69cd935fb291e5c7273be48ce11354dae69601204810d9202b7b546dffe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2541B 14608 bytes
font_02_sfnt_off00028133.bin
cea085df242d966c371be643c9f3643306e83e249d7ceb59146094c6197a77a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28133 14744 bytes
font_04_sfnt_off0002c37b.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C37B 6084 bytes
font_05_sfnt_off0002d310.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D310 3752 bytes

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