Malicious PDF — malware analysis report

Static analysis result for SHA-256 a69b3689ab9fff07…

MALICIOUS

PDF

41.3 KB Created: 2021-05-17 08:06:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b6546ec7993360226743400698c2887b SHA-1: 029d3f0153b176be12bfa6075cf01e6ceae5bba1 SHA-256: a69b3689ab9fff070cf3509d3b84fbb6a84f91c6a02d6d74f96465f2f4728fe5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to malicious infrastructure, specifically promoting a "Coin Master Pro Hack". The document body and heuristics indicate a lure for game-related cheats, likely to deliver a secondary payload or phish for credentials. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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-pro-hack-game-hack In PDF document text
    • http://bw.ac.th/userfiles/files/rbx-roblox-robux_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/add-robux_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/coin-master-hack-apk-35-8_GM406889139.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/coin-master-apk-mod-hack-download_GM406889139.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/coin-master-free-spins-links-app_GM406889139.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/coin-master-card-link-free_GM406889139.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/how-to-get-free-spins-on-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/coin-master-daily-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/javascript-free-robux_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/coin-master-hack-apk-facebook-login_GM406889139.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/free-op-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/how-to-get-minecraft-bedrock-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/free-robux-2021_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
stream_003_off00004800.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4800 24556 bytes
SHA-256: 6d5dc094331d9ec7b9381274892182a1efff75ceff7230c5856a4180212c7877
font_01_sfnt_off00008054.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8054 17868 bytes
SHA-256: 6fc94cfc5e353177abc481ae17561ea3edb8d825f50582b916d0cbb0f569bfa7

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