Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f8adba14d9b2fbc…

MALICIOUS

PDF

46.3 KB Created: 2021-05-15 14:27:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 49a7513e70654ffa0954fd73fbc92ac9 SHA-1: 2996d080d7316a9984f09cc665191be0484776b9 SHA-256: 3f8adba14d9b2fbcf3cc922a7228e9e1ab7a860a1861a1a7b8e992167ae449b9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting "game hacks" and "generators". The primary malicious URL identified is https://netcdn.xyz/app/406889139/ac-market-coin-master-hack-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious redirector designed to lure users into potentially harmful content. The document's content and embedded links suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8696

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/ac-market-coin-master-hack-game-hack In PDF document text
    • https://emindonesia.com/assets/CKImages/files/minecraft-creative-mode-free_GM479516143.pdfIn PDF document text
    • https://emindonesia.com/assets/CKImages/files/code-free-robux_GM431946152.pdfIn PDF document text
    • https://emindonesia.com/assets/CKImages/files/minecraft-apk-download-v1-144-2-free_GM479516143.pdfIn PDF document text
    • https://emindonesia.com/assets/CKImages/files/free-minecraft-maps-pe_GM479516143.pdfIn PDF document text
    • https://emindonesia.com/assets/CKImages/files/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://emindonesia.com/assets/CKImages/files/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • https://emindonesia.com/assets/CKImages/files/coin-master-free-foxy-food_GM406889139.pdfIn PDF document text
    • https://emindonesia.com/assets/CKImages/files/completed-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://emindonesia.com/assets/CKImages/files/coin-master-cracked-apk-free-download_GM406889139.pdfIn PDF document text
    • https://emindonesia.com/assets/CKImages/files/roblox-free-items-2021_GM431946152.pdfIn PDF document text
    • https://emindonesia.com/assets/CKImages/files/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • https://emindonesia.com/assets/CKImages/files/cm-free-spin-link-today_GM406889139.pdfIn PDF document text
    • https://emindonesia.com/assets/CKImages/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://emindonesia.com/assets/CKImages/files/coin-master-free-spins-2021-ios_GM406889139.pdfIn PDF document text
    • https://emindonesia.com/assets/CKImages/files/coin-master-hack-ios-apk_GM406889139.pdfIn PDF document text
    • https://emindonesia.com/assets/CKImages/files/free-robux-exe_GM431946152.pdfIn PDF document text
    • https://emindonesia.com/assets/CKImages/files/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://emindonesia.com/assets/CKImages/files/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • https://emindonesia.com/assets/CKImages/files/latest-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://emindonesia.com/assets/CKImages/files/free-400-spins-coins-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ad5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AD5 29992 bytes
SHA-256: 863421c7185866e769c69280003e7310c3e7334addaf6c25c37e90a31c23ab22
font_01_sfnt_off00008a5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A5B 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00009446.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9446 17716 bytes
SHA-256: a2eac6e8880e439e1074c72625681386097f2e1a750c353688b11f9695167b3c

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