Malicious PDF — malware analysis report

Static analysis result for SHA-256 46a7cc457087f8f4…

MALICIOUS

PDF

41.1 KB Created: 2021-05-16 20:40:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e30d6844f7698ad3d40a94ddd991c426 SHA-1: 2c16db1dd03c3dda7153ba61242447c3ce36fedb SHA-256: 46a7cc457087f8f490e649d653c65ac5b96e671be7aaccfb25fece781018d1b9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document contains multiple links designed to lure users into clicking on what appears to be a 'Coin Master' game hack or cheat generator. The primary link redirects to malicious infrastructure, indicating a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to exploit user interest in free in-game currency or cheats to lead them to potentially harmful content or further malicious downloads.

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-cheats-for-free-spins-game-hack In PDF document text
    • https://info-zentr.ru:443/images/free-roblox-printables_GM431946152.pdfIn PDF document text
    • https://info-zentr.ru:443/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://info-zentr.ru:443/images/httpswwwurcouponsdealcom202103coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • https://info-zentr.ru:443/images/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://info-zentr.ru:443/images/robux-free-online_GM431946152.pdfIn PDF document text
    • https://info-zentr.ru:443/images/coin-master-free-spins-may-11-2021_GM406889139.pdfIn PDF document text
    • https://info-zentr.ru:443/images/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • https://info-zentr.ru:443/images/200-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://info-zentr.ru:443/images/coin-master-34-5-hack_GM406889139.pdfIn PDF document text
    • https://info-zentr.ru:443/images/ro-ghoul-script_GM431946152.pdfIn PDF document text
    • https://info-zentr.ru:443/images/unlimited-robux-2021_GM431946152.pdfIn PDF document text
    • https://info-zentr.ru:443/images/links-to-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://info-zentr.ru:443/images/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://info-zentr.ru:443/images/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://info-zentr.ru:443/images/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://info-zentr.ru:443/images/coin-master-new-link-free-spin_GM406889139.pdfIn PDF document text
    • https://info-zentr.ru:443/images/coinmaster-links_GM406889139.pdfIn PDF document text
    • https://info-zentr.ru:443/images/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • https://info-zentr.ru:443/images/free-unlimited-coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • https://info-zentr.ru:443/images/free-coin-master-spins-and-coins_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
stream_003_off00004818.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4818 23940 bytes
SHA-256: ac4251746c432fcd72193629617a5b355b7f7e3d6ac90b60b4ed4ff9b2c0273d
font_01_sfnt_off00007eda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EDA 18052 bytes
SHA-256: 78e09613e9051ea2c05113a2cb3e2459165660dd7357248de65be6b789990433

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