Malicious PDF — malware analysis report

Static analysis result for SHA-256 165956fa8cc15d7c…

MALICIOUS

PDF

340.2 KB Created: 2015-08-20 08:34:13 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: b84cdc5f91ce0ea82158a0bb3bc47c8b SHA-1: d0ebe29af7b02bc6ac972a72038c57d8ca2a0c6a SHA-256: 165956fa8cc15d7ca95fa9c063140ab1423e4ece731abf011681d9483ee7cd15
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, botcraftman.ru, which is disguised as a download for "Visio 2003 rus". This indicates a phishing or social engineering attempt to trick the user into visiting a malicious site. 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 0.9979

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=Visio+2003+rus+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4639/4639523_mfyua_neoficialnuyy_sayt_fayloobmennik.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4638/4638880_chituy_vh_dlya_css_v34.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4639/4639699_skachat_moduy_na_fermer_simulyator_2015.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005087e.bin
b19606690bc518a121be91770b59e5783275230958927e5188241e65bef21206		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5087E 8732 bytes
font_01_sfnt_off000521ac.bin
72e692cc3d4f30ddd86f0ce02da1b6e767dabc9b3350c1d3ffb54a6a9cf9b921		 pdf-font-stream PDF embedded font (sfnt) at offset 0x521AC 15292 bytes

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