Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f2ee93f287ed8a4…

MALICIOUS

PDF

187.0 KB Created: 2015-07-24 13:20:07 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: eb4499cfc1b1bc64059c07a31fc8f34a SHA-1: 0946e87b364488e07479499b5cc854b3b84dbe28 SHA-256: 4f2ee93f287ed8a44af034b19c281762dbfc8cf1ac83aa8f658576329c217e1a
92 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to 'botcraftman.ru', which is identified as a malicious redirector. No scripts were extracted, and the document body was not parsable text, so the attack pattern is inferred from the malicious link.

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%A1%D0%B0%D0%B1%D0%B2%D1%83%D1%84%D0%B5%D1%80+%D0%9C%D0%B8%D1%81%D1%82%D0%B5%D1%80%D0%B8+%D0%9C%D1%82%D0%B2+300%D0%90+%D0%A1%D1%85%D0%B5%D0%BC%D0%B0+%D0%9F%D0%BE%D0%B4%D0%BA%D0%BB%D1%8E%D1%87%D0%B5%D0%BD%D0%B8%D1%8F&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188077_whatsapp_na_nokia_5228.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184446_planshet_eplutus_g10s_instrukciya.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188674_g_tolyatti_raspisanie_avtobusa_320_park_hauss_hryaschevka.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002454c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2454C 3556 bytes
font_01_sfnt_off000252cf.bin
c526ab8d47b146d2d579492b92f41ec9981200b4b8495d21f0cab89b5be3a6b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x252CF 14772 bytes
font_02_sfnt_off000280c3.bin
a379e664d05e2f5dda96c95ce98a58b65dd1defc40268d5914438a6cad9b2e98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x280C3 14532 bytes
font_03_sfnt_off0002abae.bin
47ab17646aba07b68eb02b371f367cfbed5b3dd160f064be46e41366d3690362		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ABAE 7612 bytes
font_04_sfnt_off0002c247.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C247 6084 bytes
font_05_sfnt_off0002d1dc.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D1DC 3752 bytes

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