Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bc52bea8d6ad370…

MALICIOUS

PDF

189.1 KB Created: 2015-07-24 04:50:25 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 4d6ddd2851085678d781eff8d08e14e9 SHA-1: 47e670a15169523ba0f801485936c72ac374f218 SHA-256: 5bc52bea8d6ad3704a822304a32796964d036bbda384307c087e2555aee65dbb
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF was flagged by multiple heuristics as malicious, specifically for containing a link to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The embedded URL is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution 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=%D0%9A%D0%BB%D1%8E%D1%87+%D0%B0%D0%BA%D1%82%D0%B8%D0%B2%D0%B0%D1%86%D0%B8%D0%B8+%D0%B8%D0%B3%D1%80%D1%8B+%D0%B4%D0%BB%D1%8F+%D0%B4%D0%B0%D0%BB%D1%8C%D0%BD%D0%BE%D0%B1%D0%BE%D0%B9%D1%89%D0%B8%D0%BA%D0%BE%D0%B2+3+%D0%BF%D0%BE%D0%BA%D0%BE%D1%80%D0%B5%D0%BD%D0%B8%D0%B5+%D0%B0%D0%BC%D0%B5%D1%80%D0%B8%D0%BA%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185632_programma_dlya_prosmotra_fotografiy_windows_7.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185133_game_sounds_manifest_txt_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184423_igruy_maynkraft_onlayn_besplatno_v_horoshem_kachestve.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024d09.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24D09 3556 bytes
font_01_sfnt_off00025a8c.bin
997e1a0ad185cc04def69a8313bff5b6d371bef50de008f0ca80cdbb10c37f69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25A8C 15340 bytes
font_02_sfnt_off000289ed.bin
1a4b4f980c41b886d6bc2716f116809460894a893eddad37bc56e62c6688cee0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x289ED 14468 bytes
font_03_sfnt_off0002b498.bin
b862796137e9de560e71332954deeaf04364c9d71c604796c32cdc316d7a5bac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B498 7504 bytes
font_04_sfnt_off0002ca69.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA69 6084 bytes
font_05_sfnt_off0002d9fe.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D9FE 3752 bytes

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