Malicious PDF — malware analysis report

Static analysis result for SHA-256 b674b872efe65785…

MALICIOUS

PDF

366.3 KB Created: 2015-08-26 10:01:53 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: b527bc5a6005974353f5f771a7d63f39 SHA-1: b9f32e4c7b582b248e266ac16870b235d77c4762 SHA-256: b674b872efe6578567b41103f2720124ff41da67d89492367ba08bb67966716b
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. No scripts were extracted, but the embedded link is sufficient to classify the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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=%D0%B1%D0%BB%D0%B0%D0%BD%D0%BA+%D1%84%D0%BE%D1%80%D0%BC%D1%8B+%D1%8014001+%D0%B2+2014+%D0%B3%D0%BE%D0%B4%D1%83&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751885_skachat__knigi__iz_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751921_lovi__video__skachat_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752078_skachat__stroitelnuyy__trenazher_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00057482.bin
7b85bdf0458b005b73bc815bfa483cbd897f311c2ca0b74172a2c5e854a0d609		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57482 8532 bytes
font_01_sfnt_off00058d4c.bin
6c16b8366018765e9ae4c7754fadbdc0ba7afa828e4324fd8c96ff03926e4f92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58D4C 13976 bytes

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