Malicious PDF — malware analysis report

Static analysis result for SHA-256 2931e3de21c0dd9d…

MALICIOUS

PDF

182.9 KB Created: 2015-07-25 20:18:14 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 011ec995c1dde485f9874d784c563c39 SHA-1: 7711b33b11effedbe7a31381b2205d76df12852b SHA-256: 2931e3de21c0dd9d7d375432c9a0af1b2ddf1c54e891c51afbba9e0db573d512
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier as malicious and contains a link to a known malicious redirector. The embedded URL is likely part of a phishing or malware distribution scheme, aiming to lure the user to a compromised or malicious website. No scripts were extracted, but the presence of the malicious URL is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 3

  • 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.
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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=%D0%A1%D0%B8%D0%BC%D1%81+3+%D0%BA%D0%BE%D0%B4%D1%8B+%D0%BD%D0%B0+%D0%BE%D0%B4%D0%B5%D0%B6%D0%B4%D1%83+%D0%B8+%D0%BF%D1%80%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8+%D1%84%D0%BE%D1%82%D0%BE&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192845_addonuy_na_garris_mod_10_lazernuye_mechi.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192610_skachat_sbornik_pesen_gamora.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4200/4200633_kak_ubrat_cenzuru_v_sims_2_yemmanuyel.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_off0002408b.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2408B 3556 bytes
font_01_sfnt_off00024e0e.bin
cd14a7610d91b02c463f2beaaeda8a20313457f0a992350cc46fb6053ae8bb42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E0E 14508 bytes
font_02_sfnt_off00027b8d.bin
0a56b9ab3a882857141fd2cee7328c7647b4ec5f2cf257eddc67fb7bdd7807af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B8D 14468 bytes
font_03_sfnt_off0002a637.bin
8c0cfc0bc9842603b51fe8f206fae5261599bac2d2a16473ad33f16d157024f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A637 6980 bytes
font_04_sfnt_off0002ba7b.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BA7B 6084 bytes
font_05_sfnt_off0002ca10.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA10 3752 bytes

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