Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed3d85e780861541…

MALICIOUS

PDF

34.5 KB Created: 2021-07-03 15:28:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 17023fe53889fb4bccb00896e0766896 SHA-1: 1ceeb8c629c6216139c7a44f052d4140b565aaf5 SHA-256: ed3d85e780861541bd81c4b384b9248af3fb417439fac59a0eea2ae3892e953c
160 Risk Score

Malware Insights

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

This PDF document contains links that redirect to malicious infrastructure, specifically advertising game hacks and free in-game currency. The primary link, http://netcdn.tw/app/406889139/coin-monster-game-hack, is identified as a malicious redirector. The document's structure and embedded links suggest a lure to download further malicious content, likely exploiting vulnerabilities or leading to phishing pages. No scripts were extracted, but the PDF's nature points towards exploitation for client execution.

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/406889139/coin-monster-game-hack In PDF document text
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/real-robux_GM431946152.pdfIn PDF document text
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/how-to-get-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/free-server-side-exploit-roblox_GM431946152.pdfIn PDF document text
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/roblox-free-download_GM431946152.pdfIn PDF document text
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/free-account-roblox-obc-2021_GM431946152.pdfIn PDF document text
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/free-girl-pants-ids-on-roblox_GM431946152.pdfIn PDF document text
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/free-robux-site_GM431946152.pdfIn PDF document text
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/minecraft-net-download-free_GM479516143.pdfIn PDF document text
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/roblox-hack-week-2021_GM431946152.pdfIn PDF document text
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/download-hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/coin-master-extra-spins_GM406889139.pdfIn PDF document text
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/minecraft-free-download-mac-full-version-2021_GM479516143.pdfIn PDF document text
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/how-to-hack-your-robux_GM431946152.pdfIn PDF document text
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/minecraft-dungeons-download-free_GM479516143.pdfIn PDF document text
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/robux-mony-free_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_off0000323c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x323C 22908 bytes
SHA-256: 47b28483f8e4ab8e36d7b4a585a459a17ce0ffdd863cc4cd846ae4c37e6ac3e3
font_01_sfnt_off0000659a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x659A 17836 bytes
SHA-256: ecea4e06c2319bfbde5a9eafaa104503e5acdd43c54713b47264e7f5b68a66df

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