Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dea35e68d299822…

MALICIOUS

PDF

36.2 KB Created: 2021-06-28 16:29:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7f003275d8c52ad4cf4e3b193274c93d SHA-1: 72cf436d0551cb4040c14f1076292c2d26846f49 SHA-256: 9dea35e68d299822a84f62c5bfb0e532162761d56d03344d12f5004e62160199
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and links to a known malicious redirector infrastructure. The document body and heuristics indicate a lure for free game currency and hacks, designed to entice users to click the malicious link. This link likely leads to a second-stage payload or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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 http://netcdn.co/app/431946152/robux-cheats-no-human-verification-game-hack In PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/best-free-minecraft-server-hosting-reddit_GM479516143.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/free-minecraft-packs_GM479516143.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/minecraft-free-no-virus_GM479516143.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/how-to-get-things-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/ezekiel-how-to-change-your-roblox-name-for-free_GM431946152.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/free-coins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/free-coin-master-credit_GM406889139.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/coin-master-hack-cheat-generator-coins-and-spins-unlimited_GM406889139.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/free-robux-apk_GM431946152.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/how-to-get-free-robux-steps_GM431946152.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/mad-city-cheat-roblox-kill-all_GM431946152.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/free-spins-for-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/minecraft-112-2-hacked-client_GM479516143.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/10-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/robux-link_GM431946152.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/coin-master-daily-free-spins-link-march-2021_GM406889139.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/free-tiktok-followers-real_GM835599320.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off00003572.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3572 22612 bytes
SHA-256: 79e3ad6091ef172b62ca83f6442b1f2e2b8414a565aeae830b746299d6f4eb76
font_01_sfnt_off000067c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67C3 19336 bytes
SHA-256: 3a96d76d38ae9fb69267ec0200ee6a3dcc96810d4009ae3bd6e16f1052fdb24e

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