Malicious PDF — malware analysis report

Static analysis result for SHA-256 a74ee9df99428dc9…

MALICIOUS

PDF

185.1 KB Created: 2015-08-08 12:34:42 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: af38da7598e00826f2f894c54a9b4d11 SHA-1: 72c30709291b383aa495980f85fa822ecdd57f81 SHA-256: a74ee9df99428dc97032371d492b05053870a88898d3f2cea558530c6f696631
90 Risk Score

Malware Insights

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

The PDF was flagged by a critical heuristic for containing a link to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL http://botcraftman.ru/... is the primary indicator of malicious intent, likely serving as a lure for further malicious activity. No scripts were extracted from this sample.

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%BE%D0%B3%D1%83+%D0%B3%D0%BE%D1%82%D0%BE%D0%B2%D1%8B%D0%B5+%D0%BB%D0%B0%D0%B1%D1%8B+%D0%BF%D0%BE+%D1%84%D0%B8%D0%B7%D0%B8%D0%BA%D0%B5+1+%D0%BA%D1%83%D1%80%D1%81&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4389/4389814_kak_nakazuyvat_porkoy_malchikov.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4386/4386423_umnuye_knizhki_dlya_detey_23_let_zelenaya_seriya_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385844_skachat_may_talking_tom.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023fc8.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23FC8 3556 bytes
font_01_sfnt_off00024d4b.bin
1f4d23a8fc615d7a7d1d79ec293fd515ff6936d5bb8cb0984484fe6bd6952ba9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24D4B 14692 bytes
font_02_sfnt_off00027b60.bin
dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B60 14468 bytes
font_03_sfnt_off0002a613.bin
605c607ed62f3d9c9730241a4b360975daca1d310a212869f3aa2ea2bbf49ac6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A613 6984 bytes
font_04_sfnt_off0002ba70.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BA70 6084 bytes
font_05_sfnt_off0002ca05.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA05 3752 bytes

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