Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcfc99406311927c…

MALICIOUS

PDF

40.3 KB Created: 2021-05-23 17:36:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: aa601405dfa170dd24087e638769ed53 SHA-1: e00f1eb08e0b087ad1d45236c20ba943ad8b0e26 SHA-256: dcfc99406311927c29ed7fce8fce0a4b9357febe618277a63227a948f23a1200
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirector infrastructure, specifically advertising 'free Robux' and 'game hacks' to lure victims. The document body and heuristics confirm the presence of these lures and the redirection to malicious sites. While no scripts were extracted, the embedded URLs and the nature of the lures strongly suggest an attempt to lead users to a malicious website for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7776

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • 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/free-robux-no-human-verification-or-survey-or-download-2021-game-hack In PDF document text
    • https://heritagebanquethall.ca/images/minecraft-free-trial_GM479516143.pdfIn PDF document text
    • https://heritagebanquethall.ca/images/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://heritagebanquethall.ca/images/com-roblox_GM431946152.pdfIn PDF document text
    • https://heritagebanquethall.ca/images/robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://heritagebanquethall.ca/images/coin-master-free-link_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003507.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3507 24308 bytes
SHA-256: bd439136994875dccf6c52ed6e79c9c04cce5f31b69a7741ffb46678f52c9518
font_01_sfnt_off00006ccd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CCD 2824 bytes
SHA-256: 45bf821f81e84f4aa8d8374f492b182b36404f38b462c7dc471deaad6ab5c104
font_02_sfnt_off0000767a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x767A 20136 bytes
SHA-256: 66e5e50e12f5eb49621ab9bcd6ab85026409d616512a452c1eb3339dd9867554

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