Malicious PDF — malware analysis report

Static analysis result for SHA-256 10b99c5c9916ddad…

MALICIOUS

PDF

184.5 KB Created: 2015-08-05 13:54:13 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 84604c204e7d8289802aca6b0387bcd0 SHA-1: f9d28fced3e15840b788e656bdc9bbcc186115c3 SHA-256: 10b99c5c9916ddadd8e78849cdbe12881750b12b5f2664ee0bf5bdab97fbfbca
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. This suggests the document is designed to lure users to a malicious site, likely for phishing or malware distribution. No scripts were extracted, but the presence of a malicious URL is a strong indicator of malicious intent.

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=battle+of+the+immortals+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304578_blagodarstvennoe_pismo_studentu_obrazec.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304596_skachat_igru_18_stalnuyh_koles_po_dorogam_ukrainuy.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304603_microsoft_project_2010_skachat_besplatno.pdf
    • http://www.microsoft.com/typography/fonts/You
    • http://www.microsoft.com/typography/fonts/

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a46b.bin
6d8671d391f4d9737f39934e94f6090d2a7bfe9799e2b9ec9a8790ed855f8a8f		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A46B 6872 bytes
font_00_sfnt_off00023c0c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23C0C 3556 bytes
font_01_sfnt_off0002498f.bin
495fc556aaee540dff6e94061dbcf965ae361033ea125bef6fbdb44a31af3a05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2498F 15132 bytes
font_02_sfnt_off0002786a.bin
4b97de365451b0c332e9fff695f454297d0a0b20b605a2cc900cd9cb9556a059		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2786A 14944 bytes
font_04_sfnt_off0002b838.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B838 6084 bytes
font_05_sfnt_off0002c7cd.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C7CD 3752 bytes

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