Malicious PDF — malware analysis report

Static analysis result for SHA-256 e601755314cea6e7…

MALICIOUS

PDF

188.3 KB Created: 2015-07-24 11:14:25 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ef7d19db80e166cd7b8fe88310fa54d8 SHA-1: 4162889a182aaf7d67b691a31e890551924d3c6d SHA-256: e601755314cea6e77360d188714d1365ba06b573d6560f38e456bf4ace2c3257
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 strongly indicated maliciousness. The embedded URL http://botcraftman.ru/... is the primary indicator of compromise, suggesting the document's purpose is to lure users to a malicious site. No scripts were extracted, limiting further analysis of the payload.

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%BE%D0%BF%D0%B5%D1%80%D1%83+%D0%BD%D0%B0+%D1%82%D0%B5%D0%BB%D0%B5%D1%84%D0%BE%D0%BD+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D1%80%D1%83%D1%81%D1%81%D0%BA%D1%83%D1%8E+%D0%B2%D0%B5%D1%80%D1%81%D0%B8%D1%8E&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188284_obrazec_zapolneniya_dnevnika_po_preddiplomnoy_praktike.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185629_skachat_igruy_na_sega_dreamcast_cherez_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185603_maykrosoft_ofis_2007_skachat_besplatno_bez_registracii.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024c1c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24C1C 3556 bytes
font_01_sfnt_off0002599f.bin
d3b50303f957bdb21927292f5609c6181a131803e654a32061291073de302938		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2599F 15156 bytes
font_02_sfnt_off00028856.bin
4ae165705ecc41720893a92c6e94e3ee89b3be36a12e4a920505046f59c61edc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28856 14468 bytes
font_03_sfnt_off0002b304.bin
8c909ffdd35b502476e437c22b5d5ae85f497b78444326373e4554dd66a436ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B304 6984 bytes
font_04_sfnt_off0002c748.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C748 6084 bytes
font_05_sfnt_off0002d6dd.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D6DD 3752 bytes

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