Malicious PDF — malware analysis report

Static analysis result for SHA-256 de0eb711ee309cbd…

MALICIOUS

PDF

346.0 KB Created: 2015-08-19 13:51:02 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: f2b95ea536f4d242016cf92e597e92c1 SHA-1: 66ca4d16bb02c997dd80656c67a171ba67cdc18a SHA-256: de0eb711ee309cbdbe8e8a82b5e935383dffc5babccebc41ef28fde2d097d88f
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. The document body is heavily obfuscated and does not provide clear textual clues, but the presence of the malicious URL is the primary indicator of malicious intent.

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=opera+1217+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%81+%D0%BE%D1%84%D0%B8%D1%86%D0%B8%D0%B0%D0%BB%D1%8C%D0%BD%D0%BE%D0%B3%D0%BE+%D1%81%D0%B0%D0%B9%D1%82%D0%B0&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626500_skachat_mech_2_sezon_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4496/4496735_yekskursii_v_adlere_cenuy.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626483_metro_2035_kniga_skachat_txt.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00051db4.bin
10f759717d3d196b5274c106670acd5b0316ba887aa70da48fefa10e05ddcf9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51DB4 10620 bytes
font_01_sfnt_off00053b0f.bin
7f31bb8b93ed249e90567c91fae8aa1d21c6518ada2c0b4187e0c5054a621a88		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53B0F 15060 bytes

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