Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6b244ce1001e4b1…

MALICIOUS

PDF

34.2 KB Created: 2021-06-19 00:30:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3c1971485f3b0a007cfc06968d363c0d SHA-1: 8e05e15f8d5ca1ee2021566e169eadc47ba0c89a SHA-256: a6b244ce1001e4b1e5ace2c3dea12e5085271d408f9fc972c4fe72994135cd19
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on them by promising free game items or hacks. The primary link, http://netcdn.co/app/431946152/roblox-free-limited-faces-game-hack, is flagged as a malicious redirector. The document's content and heuristics strongly suggest a phishing or scam attempt, likely leading to further malware download or credential harvesting.

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.co/app/431946152/roblox-free-limited-faces-game-hack In PDF document text
    • http://centr-expert.su/images/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/stock-speed-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://centr-expert.su/images/free-tiktok-likes-no-survey_GM835599320.pdfIn PDF document text
    • http://centr-expert.su/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://centr-expert.su/images/free-robux-com_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/coin-master-time-hack_GM406889139.pdfIn PDF document text
    • http://centr-expert.su/images/microsoft-roblox-rewards_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://centr-expert.su/images/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • http://centr-expert.su/images/coin-master-event-hack_GM406889139.pdfIn PDF document text
    • http://centr-expert.su/images/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/free-robux-without-extra_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/roblox-hack-apocalypse-rising-2021_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://centr-expert.su/images/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://centr-expert.su/images/roblox-top3k-free-model_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/free-robux-legit_GM431946152.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_off00002f56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F56 22132 bytes
SHA-256: eec9d65db4ec36dd7eb07596fbf07dbd54bd8f967d4956ecb4a4a4c6b3869870
font_01_sfnt_off00006060.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6060 19120 bytes
SHA-256: 7d2a519668aa872621b28dc8f32ea813778c5306f8252ec9ebd5cd0971caaa01

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