Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d72b91ad4fac623…

MALICIOUS

PDF

361.6 KB Created: 2015-08-19 14:17:46 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 23f1a759b25a266a5130c63f6af4e783 SHA-1: a0871d3a9c3f5879c9592f15a0bb13a3181acb71 SHA-256: 5d72b91ad4fac62365b166779aa8700d2c8ea1b341ef69a4853648bdb47b6bc2
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector infrastructure, indicating a high likelihood of malicious intent. The ML classifier also flagged this PDF with high confidence. While no scripts were extracted, the presence of a malicious URL strongly suggests the document is designed to lure the user to a compromised site.

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=13+%D0%9B%D0%B5%D1%82%D0%BD%D0%B8%D0%B9+%D0%B3%D0%BE%D0%BB%D1%8B%D0%B5+%D0%B4%D0%B5%D0%B2%D0%BE%D1%87%D0%BA%D0%B8&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626602_powersuite_2015_kod_aktivacii_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4496/4496731_tablicuy_po_himii_dlya_egye.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626746_akt_o_zamene_spidometra_obrazec.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055d51.bin
327d275a801c41982077dbacfac24f5773c144ba2bce24ffd97b057d97327d13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55D51 10032 bytes
font_01_sfnt_off00057846.bin
35e2cba5c609c023bd51c3305aedc0b6ed2467974b3f34b392537228bb7f59df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57846 14980 bytes

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