Malicious PDF — malware analysis report

Static analysis result for SHA-256 61839a41dd5daacb…

MALICIOUS

PDF

355.8 KB Created: 2015-08-29 12:09:04 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-07-07
MD5: 4646af4a15a955df7008a00d766849fc SHA-1: 0778fc6a5c69e8b10b1bf3f1bbbf45316d15af52 SHA-256: 61839a41dd5daacb2a94b07b472b0006720b8be241be6661d43ff6072c7230ba
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 link to a known malicious redirector infrastructure. The embedded URL is likely part of a phishing or malware distribution scheme. No scripts were extracted, but the presence of a malicious link indicates a high likelihood of malicious intent.

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=%D1%80%D0%B5%D0%BA%D0%BE%D0%BC%D0%B5%D0%BD%D0%B4%D0%B0%D1%86%D0%B8%D0%B8+%D0%B2+%D1%80%D0%B5%D0%B7%D1%8E%D0%BC%D0%B5+%D0%BF%D1%80%D0%B8%D0%BC%D0%B5%D1%80&charset=utf-8 In PDF document text
    • http://img1.liveinternet.ru/images/attach/c/7//4831/4831130_dlk__640__instrukciya_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830604_sims__3__redaktor_.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/7//4831/4831059_skachat__besplatno__programmu_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054901.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54901 8160 bytes
SHA-256: 7d1134911feaff09c2925effbb228b36022e264c1432fd2f60fbd02ad58ad331
font_01_sfnt_off000560ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x560AB 14772 bytes
SHA-256: 6f496e3f0d92d5cd066767cabc34cdd221ff758d82194baf20e964e46c0637ee

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