Malicious PDF — malware analysis report

Static analysis result for SHA-256 45ae0a2dce38c528…

MALICIOUS

PDF

187.5 KB Created: 2015-07-25 03:09:54 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c35b209fa807677dd838b0cdf6c36ae8 SHA-1: 81deb09845bc1ca55ae56e7e60680b077ff72aaa SHA-256: 45ae0a2dce38c528e67cf13f2b5c85d2d190a5f008d9236fc494434f57f4584c
90 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 assigned a high probability of maliciousness. The primary malicious IOC is the URL pointing to botcraftman.ru, which is likely used to funnel users to a malicious site. No scripts were extracted, and the document body was truncated, limiting further analysis.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B8%D0%B3%D1%80%D1%83+gta+%D0%BA%D1%80%D0%B8%D0%BC%D0%B8%D0%BD%D0%B0%D0%BB%D1%8C%D0%BD%D0%B0%D1%8F+%D1%80%D0%BE%D1%81%D1%81%D0%B8%D1%8F+%D0%B1%D0%B5%D1%82%D0%B0+2+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%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://img1.liveinternet.ru/images/attach/c/5//4193/4193037_semeynuyy_naturizm_s_detmi_foto.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192496_testuy_po_biologii_11_klass_s_otvetami.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188600_stalker_ten_chernobuylya_povelitel_zonuy_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024787.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24787 3556 bytes
font_01_sfnt_off0002550a.bin
e93cfc973a528bdc55bd4de70043211586a9f03600ac733b2902a1a4c6ad4a79		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2550A 14924 bytes
font_02_sfnt_off00028343.bin
68798fda542919f1d093649f4b1ce04c84c955f28d25c8171c8a38b7c9940420		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28343 14576 bytes
font_03_sfnt_off0002ae53.bin
476e02c225e7d493b398bbe53294edffdc20036de143148247388f06334f360a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AE53 7448 bytes
font_04_sfnt_off0002c44a.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C44A 6084 bytes
font_05_sfnt_off0002d3df.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D3DF 3752 bytes

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