Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e878d5a446cabd9…

MALICIOUS

PDF

34.8 KB Created: 2021-07-04 09:25:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 581afc6847e3b92edc05b091026b1ea3 SHA-1: c6c35565af56963b771e90d214b8fd25a16a05a3 SHA-256: 8e878d5a446cabd9ff29893d9e5c579d1eff6e3cb58e92784d72c52ba33c3f1b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and sites offering game hacks and currency. The document body explicitly mentions 'free Roblox' and 'CLICK HERE TO ACCESS ROBUX GENERATOR', indicating a lure for users seeking such cheats. The embedded URLs likely lead to further malicious content or phishing pages designed to steal credentials or deliver malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/how-do-you-get-free-roblox-game-hack In PDF document text
    • http://educhina.mn/editor/files/roblox-synapse-hack_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/how-do-u-get-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/is-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://educhina.mn/editor/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/how-to-get-free-spins-on-coin-master-2021-iphone_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-hack-link-2021_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/quick-and-easy-hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-spin-link-for-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/how-to-tell-if-your-roblox-account-got-hacked_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/get-coin-master-free-spin_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_off00003035.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3035 22392 bytes
SHA-256: 16b326442d35d1770a240cc2e6b93d0c3e5dda0d9e9df7eab83936870285662b
font_01_sfnt_off000061fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61FC 19388 bytes
SHA-256: ad78cfc62cd8c1b058715f2dc66a6bf5ac5c09636f1ae08381e96b56faa7ef77

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