Malicious PDF — malware analysis report

Static analysis result for SHA-256 55462121efc7143c…

MALICIOUS

PDF

185.0 KB Created: 2015-07-24 12:37:59 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c63e3b4982e346ce463e70f09e53733a SHA-1: 17331ea3b70ff672810e5ef9414279e983ae3fd9 SHA-256: 55462121efc7143c89195cdd08d9cd8a4ad860bbd379abc5b85920c3c9b5bb25
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector, http://botcraftman.ru/. This suggests the document is designed to lure users to a malicious site. No scripts were extracted, and the document body was heavily truncated, limiting further analysis of the specific lure.

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=naruto+mugen+2013+%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//4190/4190476_pley_market_dlya_nokia_n8.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191941_skachat_sims_2_besplatno_na_kompyuter.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184329_faction_fronts_clear_sky_v221_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023c11.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23C11 3556 bytes
font_01_sfnt_off00024994.bin
c549f80845e3faf4063a88e263df611ab6d32d7def6c3cc4e9dcf03dbcf4cc31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24994 15116 bytes
font_02_sfnt_off00027871.bin
171a362582f9d3100c40c2470cd17318d32240c4c9aff006a98b9e7e621394dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27871 14796 bytes
font_03_sfnt_off0002a429.bin
96d859a22e1e874e87c745ba06d42e561df2a49643824605317c3bdc60d9b1f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A429 7456 bytes
font_04_sfnt_off0002ba0b.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BA0B 6084 bytes
font_05_sfnt_off0002c9a0.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C9A0 3752 bytes

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