Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2e2e37413deddb5…

MALICIOUS

PDF

41.7 KB Created: 2021-05-19 15:19:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 76a2b197ee999a103aa4d10b59f5c778 SHA-1: 7a7127b4f072324609f4da2bd41ed30edde4af7b SHA-256: d2e2e37413deddb513c167ee770623ea365edfd798ba33c56fc2c10584723688
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The primary redirector URL is https://netcdn.xyz/app/406889139/coin-master-free-400-spin-link-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious redirector workflow designed to trick users into visiting potentially harmful sites.

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/coin-master-free-400-spin-link-game-hack In PDF document text
    • http://huounaixunghe.com/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://huounaixunghe.com/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://huounaixunghe.com/images/links-to-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://huounaixunghe.com/images/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://huounaixunghe.com/images/krnl-roblox_GM431946152.pdfIn PDF document text
    • http://huounaixunghe.com/images/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • http://huounaixunghe.com/images/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://huounaixunghe.com/images/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://huounaixunghe.com/images/coin-master-hack-mod-apk-2021_GM406889139.pdfIn PDF document text
    • http://huounaixunghe.com/images/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://huounaixunghe.com/images/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://huounaixunghe.com/images/how-to-download-minecraft-for-free-on-windows_GM479516143.pdfIn PDF document text
    • http://huounaixunghe.com/images/minecraft-bedrock-download_GM479516143.pdfIn PDF document text
    • http://huounaixunghe.com/images/free-spins-coin-master-2021-no-verification_GM406889139.pdfIn PDF document text
    • http://huounaixunghe.com/images/minecraft-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • http://huounaixunghe.com/images/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://huounaixunghe.com/images/hack-minecraft_GM479516143.pdfIn PDF document text
    • http://huounaixunghe.com/images/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://huounaixunghe.com/images/minecraft-windows-10-edition-hacks_GM479516143.pdfIn PDF document text
    • http://huounaixunghe.com/images/free-spin-app-coin-master_GM406889139.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_off0000493e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x493E 24208 bytes
SHA-256: fbad85f781ebcf6a53129fb44e2beed38370db9ee24945eae834eb9f7242e79e
font_01_sfnt_off0000806b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x806B 18292 bytes
SHA-256: 505b5c60595e7dab75bf8e15101a091f127ed76b3b64336be73d354ea9943c57

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