Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef0eb2b1726900ac…

MALICIOUS

PDF

33.1 KB Created: 2021-07-24 00:22:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: fcefdf0ab083c32df273c3865672d67b SHA-1: 4f40486d154bb6146d33de70a5a4d91c85f52a49 SHA-256: ef0eb2b1726900ac41cb057c8c32d1889b83b4fd1efdbd3dfd49ea1de37302d5
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links and text promoting free Robux, directing users to a malicious URL. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms that the embedded URL infrastructure is known to be malicious. The document body also contains a call-to-action phrase, suggesting a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

Heuristics 3

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://netcdn.tw/app/431946152/robuxlove-.net-free-robux-game-hack In PDF document text
    • http://kfz-werkstatt-etp.de/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://kfz-werkstatt-etp.de/images/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://kfz-werkstatt-etp.de/images/free-minecraft-website_GM479516143.pdfIn PDF document text
    • http://kfz-werkstatt-etp.de/images/free-tiktok-accounts-with-followers_GM835599320.pdfIn PDF document text
    • http://kfz-werkstatt-etp.de/images/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • http://kfz-werkstatt-etp.de/images/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://kfz-werkstatt-etp.de/images/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • http://kfz-werkstatt-etp.de/images/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://kfz-werkstatt-etp.de/images/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://kfz-werkstatt-etp.de/images/free-robux-obby_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D46 22220 bytes
SHA-256: 9fc2656d27a50e64b3fc31f1e5ff6330c689bcb98bfc3137c25b9186601033cd
font_01_sfnt_off00005e99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E99 18560 bytes
SHA-256: 2ef6922c4f6dbf81cd4ba77372bc83af8b42f3f32752200680693dd434acbf66

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