Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6a32c0945902ba4…

MALICIOUS

PDF

187.0 KB Created: 2015-07-24 13:22:35 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: f4d7937043d8cff551ec2ef928d4745a SHA-1: 91f8c5a91c623234404038cc652f2072193c94e9 SHA-256: c6a32c0945902ba46cf4ed32d096c3e8f12f97c735ba2c75410093195cb8bb27
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector infrastructure. The embedded URL points to botcraftman.ru, which is associated with malicious redirection. This suggests the document is designed to lure users to a compromised 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=the+walking+dead+episode+5+-+no+time+left+%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//4184/4184975_tekst_shutochnoe_blagodarstvennoe_pismo.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192375_kak_pisat_otchet_po_praktike.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192447_rezultatuy_egye_po_russkomu_yazuyku_2015_v_ivanovskoy_oblasti.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002aadd.bin
f99210d752e1f675c57a571a6bd8dffad670086ab18c0d968b38ba9eb35e81e6		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2AADD 7848 bytes
font_00_sfnt_off0002419f.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2419F 3556 bytes
font_01_sfnt_off00024f22.bin
e161bda34ccdc4041f0726b9d3516b13e5a5eff4977d2ca2913aeb6401117485		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F22 15252 bytes
font_02_sfnt_off00027e1d.bin
1e06813002e37036638c43d488ae492ae3e5d79889c192ed787505938eb15ffb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27E1D 15192 bytes
font_04_sfnt_off0002c20e.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C20E 6084 bytes
font_05_sfnt_off0002d1a3.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D1A3 3752 bytes

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