Malicious PDF — malware analysis report

Static analysis result for SHA-256 f19084eb122f3abc…

MALICIOUS

PDF

351.8 KB Created: 2015-08-29 01:23:31 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: c9d27a20983ec8adfeca4aa23557dd60 SHA-1: 6d4e3582cfe5ae9aac28c18f5df302ef48aa2078 SHA-256: f19084eb122f3abce9ebd3b759971c8b387eb4d0db146ca13b6e9beaee830646
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. The embedded URL is likely the primary mechanism for delivering a malicious payload or directing the user to a phishing page. No scripts were extracted, and the document body was truncated, limiting further analysis of the specific lure.

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=%D0%B8%D0%B3%D1%80%D0%B0%D1%82%D1%8C+%D0%B2+%D0%B8%D0%B3%D1%80%D1%83+%D1%81%D0%B8%D0%BC%D1%83%D0%BB%D1%8F%D1%82%D0%BE%D1%80+%D0%BF%D1%8B%D1%82%D0%BA%D0%B8&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817711_arj__64__bit_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817621_torg__2__blank_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817780_aleksandr__vestov__vse_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053876.bin
7957e1f3df8a2f0aea78b8adce38ae634470ed0cec8081e3b3920891680261d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53876 7852 bytes
font_01_sfnt_off00054f3b.bin
c49fbdfbeb79c5397f700f1894e7119a8c53307521894033d35e22d0de4464e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54F3B 15556 bytes

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