Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6f6b02fc5dc4897…

MALICIOUS

PDF

187.0 KB Created: 2015-07-25 09:55:58 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 0ad1e002810de1b864fc2387a14ac2d0 SHA-1: 5d5d882f21117bf0dd68c4059cba5e8a6ebce426 SHA-256: d6f6b02fc5dc4897ac828eae6d0949d2d7f2331d5fddb359322349819becfb57
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The primary IOC is the malicious URL, which is likely used to deliver a secondary payload or redirect to a phishing page. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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+%D1%81%D0%B8%D0%BC%D1%81+4+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%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%D0%B0%D1%8F+%D0%B2%D0%B5%D1%80%D1%81%D0%B8%D1%8F&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189988_skachat_sborku_dlya_maynkraft_1710_s_modami.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4195/4195694_prilozhenie_odnoklassniki_na_telefon.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191681_otvetuy_egye_po_matematike_7_iyunya_2015_dalniy_vostok.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024872.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24872 3556 bytes
font_01_sfnt_off000255f5.bin
dcb6da5654d068481ef75dd6abae9d4653f5073359b47384ff47a3d7068cd81a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x255F5 14276 bytes
font_02_sfnt_off000282a6.bin
67d53b5d93f9c1a2a208a20cc40158f0d1b9c29be983670d6b7c684d37a817b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x282A6 14468 bytes
font_03_sfnt_off0002ad56.bin
d7c189f95d73c3a0549c7e19d7e9bcea92d2a0702e21ddb4c26a3d4a7f69855c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AD56 7116 bytes
font_04_sfnt_off0002c217.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C217 6084 bytes
font_05_sfnt_off0002d1ac.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D1AC 3752 bytes

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