Malicious PDF — malware analysis report

Static analysis result for SHA-256 3414bb3de9e9a609…

MALICIOUS

PDF

41.4 KB Created: 2021-05-19 19:35:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a2a5b300993e0e6e2ed1076d429b3e0b SHA-1: f7928cf3c57ac0e7c3b61414a09cb0789f359d0d SHA-256: 3414bb3de9e9a609c76572db7cd8e0fc8171a7c024c183d525434b3751423dfc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as "game hacks" and "giveaways". The primary lure URL is https://netcdn.xyz/app/406889139/get-coin-master-hack-game-hack, which is associated with a critical heuristic firing for malicious redirector links. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a common pattern of luring users to external malicious sites, likely for further exploitation or phishing.

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/406889139/get-coin-master-hack-game-hack In PDF document text
    • http://zercalo.org/images/coin-master-fan-page-giveaway_GM406889139.pdfIn PDF document text
    • http://zercalo.org/images/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://zercalo.org/images/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/pokemon-go-free-vs-premium_GM1094591345.pdfIn PDF document text
    • http://zercalo.org/images/minecraft-java-edition-free-code_GM479516143.pdfIn PDF document text
    • http://zercalo.org/images/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • http://zercalo.org/images/coin-master-offline-hack_GM406889139.pdfIn PDF document text
    • http://zercalo.org/images/game-give-free-robux_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/apk-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://zercalo.org/images/coin-master-spin-hack-link_GM406889139.pdfIn PDF document text
    • http://zercalo.org/images/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/minecraft-cracked-client_GM479516143.pdfIn PDF document text
    • http://zercalo.org/images/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/hack-coin-master-android-game_GM406889139.pdfIn PDF document text
    • http://zercalo.org/images/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://zercalo.org/images/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/coin-master-free-spins-generator-no-verification_GM406889139.pdfIn PDF document text
    • http://zercalo.org/images/free-robux-group-payouts_GM431946152.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
stream_003_off000049c3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49C3 24260 bytes
SHA-256: 1687bf9c75f7dc88f892b2a655328cee4a3102f50908550a78022b06ded43f12
font_01_sfnt_off00008129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8129 17716 bytes
SHA-256: 8a0578e54c06e5eadc0c0c8832f5d62fb0328dd393573d3fab931686100c837f

Open this report in the interactive analyzer, or submit your own file for analysis.