Malicious PDF — malware analysis report

Static analysis result for SHA-256 622cf1c6779c4c5f…

MALICIOUS

PDF

187.3 KB Created: 2015-07-24 00:09:43 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d1f601e4c0aad57c50090f9e6f46d371 SHA-1: a13ec990ad64e53e3981966c9a904f06d0c68e47 SHA-256: 622cf1c6779c4c5f0f7c8ad3d860db2e2ef49cf194789523d39695aef6e4eead
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded URL that is flagged as a known malicious redirector. The ML classifier also strongly indicates maliciousness. The document body appears to be malformed or truncated, but the presence of the malicious URL is sufficient evidence of a malicious intent, likely to lure the user to a phishing or malware site.

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%BC%D0%B5%D1%88%D0%B0%D1%80%D0%B8%D0%BA%D0%B8+%D0%BF%D0%B0%D1%80%D0%B0%D0%BB%D0%BB%D0%B5%D0%BB%D1%8C%D0%BD%D1%8B%D0%B5+%D0%BC%D0%B8%D1%80%D1%8B+%D0%B8%D0%B3%D1%80%D0%B0+%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://img1.liveinternet.ru/images/attach/c/5//4185/4185643_licevaya_kartochka_avtomobilya_obrazec.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185044_temuy_dlya_windows_8_skachat_besplatno_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184822_kod_aktivacii_dlya_kaspersky_internet_security_2015_na_365_dney.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024a61.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24A61 3556 bytes
font_01_sfnt_off000257e4.bin
18ed3756f516537d9e95e7fbb81ace75f7f78298fb22cf268db4811973b36030		 pdf-font-stream PDF embedded font (sfnt) at offset 0x257E4 14852 bytes
font_02_sfnt_off000285cb.bin
c521cb7f32363069232cb6cf023e13d81dfc7f2346484feaa89f0b3c8cd570ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x285CB 14520 bytes
font_03_sfnt_off0002b09d.bin
b54c1285ac5fb9925634abc048fd1b8cde423a709c1a44bf2a36e2cb27cbd72d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B09D 6632 bytes
font_04_sfnt_off0002c38a.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C38A 6084 bytes
font_05_sfnt_off0002d31f.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D31F 3752 bytes

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