Malicious PDF — malware analysis report

Static analysis result for SHA-256 139f2f7a5c097654…

MALICIOUS

PDF

359.2 KB Created: 2015-08-19 14:02:25 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 8511d615775404dcfe00c3bd50c7651e SHA-1: 6e38560581f68fc4c5dd92f1aad1ead1ddfe5716 SHA-256: 139f2f7a5c09765406b6414d529b5013a31c3979a7a90f456daefcd930bccc0d
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 critical heuristic indicating it redirects to known malicious infrastructure. The embedded URL, http://botcraftman.ru/..., is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, but the presence of a malicious redirector strongly suggests an attempt to compromise the user.

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%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BC%D0%B0%D1%84%D0%B8%D1%8F+2+%D0%BF%D1%80%D1%8F%D0%BC%D0%B0%D1%8F+%D1%81%D1%81%D1%8B%D0%BB%D0%BA%D0%B0&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626633_scriptlua_dll_skachat_dlya_serious_sam_2.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626441_uznat_rezultat_egye_po_russkomu_yazuyku_2015.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626609_olifer_kompyuternuye_seti_5e_izdanie_skachat_pdf.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005580b.bin
522cf6d5d264dbf4637e2b29e86b0975f81b808636e0f7bf4f11d44988ea63f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5580B 7440 bytes
font_01_sfnt_off00056d81.bin
a604ea6dce51aefac663effe54c67b07299c5676e9ec5897f119d54182555c9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56D81 16012 bytes

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