Malicious PDF — malware analysis report

Static analysis result for SHA-256 511d090fe6c3ea5d…

MALICIOUS

PDF

34.0 KB Created: 2021-07-04 20:21:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f65e60667796de93b90ef416652d07a7 SHA-1: c0ee7e967085e0398abf6e6d274b68d0a1427781 SHA-256: 511d090fe6c3ea5da0a16b0a61ce1b32b0d0ac3e990f82fa826eeecfa8ae74f3
160 Risk Score

Malware Insights

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

The PDF contains multiple links to a malicious redirector infrastructure, specifically advertising 'game hacks' and 'free generators' for popular games like Minecraft and Roblox. The ML classifier and specific PDF heuristics strongly indicate malicious intent, likely to lead users to phishing sites or download further malicious content. No scripts were extracted, but the embedded URLs and heuristic firings are sufficient to assess the attack pattern.

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/479516143/minecraft-game-hack In PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/prison-life-roblox-cheat-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/free-robux-no-sign-up-no-survey_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/how-to-get-free-clothes-on-roblox-on-phone_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/easy-roblox-today_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/cheat-for-roblox-super-speed-and-jump-hack_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/free-appsfor-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/coin-master-hack-version-download_GM406889139.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-2021-no-human-verification-pc_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/free-robux-android_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/haktutsin-2021-09-coinmaster50freespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/roblox-jailbreak-hack-com_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/download-coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/wurst-download_GM479516143.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_off000031ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31FF 22560 bytes
SHA-256: baf338afbb8db47cd0e5f6e84eb35b6a8df6fbd83a7ce392af858fe480fa275c
font_01_sfnt_off000063cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63CB 17856 bytes
SHA-256: 18153eb78e52d10f573a403757bf08b8b042ff0dae7dd3b4cc440df27f37a65e

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