Malicious PDF — malware analysis report

Static analysis result for SHA-256 12fe7a03d56969f7…

MALICIOUS

PDF

35.8 KB Created: 2021-05-20 18:37:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: ab62365522050ef8b59a8325d166e2c4 SHA-1: 53025d5746e2dcd2bd15b403cb65e43389249b37 SHA-256: 12fe7a03d56969f72a799e6c7c9e33449151d7cbbdf21372b7ef14cd9778d54f
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links and text that lure users with the promise of free Robux, a common tactic for phishing and malware distribution. The primary link redirects to known malicious infrastructure, indicating a clear intent to compromise the user. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious redirector workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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 https://netcdn.xyz/app/431946152/blox.page-free-robux-game-hack In PDF document text
    • http://bit-sky.com/images/coin-master-free-foxy-food_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/oprewards-login_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/como-descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/20-free-spins-coin-master_GM406889139.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_off00003210.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3210 23920 bytes
SHA-256: 7ac8bef113e24d24934756ce4836008ec00b779bf6aad08e2e20df35af1e4e9e
font_01_sfnt_off000068bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68BB 18848 bytes
SHA-256: 477bf2ef93abdd264292ffad6df1a1b97b65e35661cdcc3b49278aa82d19b07c

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