Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d3f1f64f06b11fc…

MALICIOUS

PDF

41.5 KB Created: 2021-05-14 23:34:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bbc7cc3f5bdbfe9506af8b01c9d71c88 SHA-1: 8f296c8968aa4e7fb9ec44bd1c6f0d636ecadb51 SHA-256: 4d3f1f64f06b11fc99aafb0b22f664b67c087cf67629147f9c53fa8ebe8fc02e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of free Robux and game hacks. The ML classifier also flagged this PDF as malicious. The embedded links likely lead to further malicious content or malware downloads, indicating a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/rbx-free-robux-game-hack In PDF document text
    • http://precisionheavyhaul.com/images/archery-master-3d-coins-hack_GM406889139.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/coin-master-free-spins-ios_GM406889139.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/install-coin-master_GM406889139.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/coins-master-hacks_GM406889139.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/minecraft-wurst_GM479516143.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/coun-master_GM406889139.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/how-to-get-free-roebucks-without-verification_GM431946152.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/how-to-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/coin-master-free-spins-without-verification_GM406889139.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/coin-master-hack-version-download-ios_GM406889139.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/free-roblox-injector_GM431946152.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49F4 25108 bytes
SHA-256: 1e7dd76aa47e0ae8ab4721f495cba018c6b190ca8c7caf739877156fa9ca869f
font_01_sfnt_off000080b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80B2 18012 bytes
SHA-256: 03f7603bc8a5695bbd0c39958af3fcfd5a932cbc13eba7563a8e8ca8b5ca4208

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