Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6a23810e3d08a1d…

MALICIOUS

PDF

188.1 KB Created: 2015-07-24 13:43:22 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e195582174511e2df9c0595960c1d51d SHA-1: 39a717ea96bd17b4295c9a1a50a638f6ab058a5e SHA-256: a6a23810e3d08a1d78f78f5fb9a892816b173dd6a638505f3645b196adab618b
92 Risk Score

Malware Insights

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

The PDF contains an embedded link to a known malicious redirector URL, http://botcraftman.ru/. This indicates the document is designed to lure users to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of the malicious URL is sufficient evidence for this assessment.

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%80%D0%B5%D0%B7%D1%8E%D0%BC%D0%B5+%D0%BE%D0%B1%D1%80%D0%B0%D0%B7%D0%B5%D1%86+%D0%B4%D0%BB%D1%8F+%D1%83%D1%81%D1%82%D1%80%D0%BE%D0%B9%D1%81%D1%82%D0%B2%D0%B0+%D0%BD%D0%B0+%D1%80%D0%B0%D0%B1%D0%BE%D1%82%D1%83&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188786_skachat_mod_na_mortal_kombat_9_na_kratosa.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192514_navitel_dlya_nokia_n8_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189912_shutochnuye_nominacii_dlya_nagrazhdeniya_uchiteley.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024bfb.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24BFB 3556 bytes
font_01_sfnt_off0002597e.bin
bb9affe00efa96163496a5fbbae849ad55df434646416ded91181b3ecae1a002		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2597E 14656 bytes
font_02_sfnt_off0002875f.bin
2894a2e95f819f01c1e340b533698417996480c8c8e83cbe4142995621a3eef5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2875F 14468 bytes
font_03_sfnt_off0002b20f.bin
32b2754a3f65876c0d9179c49972ade891ac0668c98a888ce09b1d48fa623555		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B20F 7028 bytes
font_04_sfnt_off0002c676.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C676 6084 bytes
font_05_sfnt_off0002d60b.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D60B 3752 bytes

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