Malicious PDF — malware analysis report

Static analysis result for SHA-256 497e5b11ee0c9fbb…

MALICIOUS

PDF

183.8 KB Created: 2015-08-08 09:42:10 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a15b776297006af6225c940b066abee0 SHA-1: 3928036726acf1ff0647de7ac99d1f4a68684c8a SHA-256: 497e5b11ee0c9fbb9921a98c69eac6fb4d1b99e68568a3fa9ad228cf99e5e084
90 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector infrastructure. The ML classifier also flagged this PDF with high confidence. The embedded URL is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, limiting further analysis of the payload.

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=nokia+n8+%D0%BF%D1%80%D0%BE%D1%88%D0%B8%D0%B2%D0%BA%D0%B0+android&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384147_maksim_batuyrev_45_tatuirovok_menedzhera_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384077_skachat_stihotvorenie_pushkina_prorok.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384102_skachat_knigu_dlya_lada_kalina.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023beb.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23BEB 3556 bytes
font_01_sfnt_off0002496e.bin
843742893399c87d5d5d11e429d20bcc27cc873d3ecd84760e54b3a4b727c05b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2496E 14736 bytes
font_02_sfnt_off00027725.bin
70ba739d6d531dca0ba064600e9abb508dba813f2d7d580c5ea4d20ccafe39bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27725 14576 bytes
font_03_sfnt_off0002a228.bin
c384fbd6c0b7059a131283bd565deb127c09d25d3681a050caac495b8b0bd9ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A228 6776 bytes
font_04_sfnt_off0002b57c.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B57C 6084 bytes
font_05_sfnt_off0002c511.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C511 3752 bytes

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