Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc31d811091d8ae2…

MALICIOUS

PDF

34.6 KB Created: 2021-06-26 04:20:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9303d10305c69943898fe447faf5c782 SHA-1: 72068093d233e3fa98d29270d4840ec09d5da1d1 SHA-256: dc31d811091d8ae24e9b46e40191cf0c59e3895818eee33a41b4fe57f1932227
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that point to known malicious redirectors and lures for game hacks and free currency. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' specifically identifies the link to 'http://netcdn.co/app/431946152/hack-mui-dragon-ball-noob-roblox-game-hack' as a lure for game hacks. The presence of numerous similar links suggests a coordinated effort to drive traffic to potentially harmful sites, likely for malware distribution or phishing.

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/hack-mui-dragon-ball-noob-roblox-game-hack In PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/how-to-get-free-coins-and-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/instant-robux_GM431946152.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/tiktok-follower-bot-free_GM835599320.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/www-free-robux-us_GM431946152.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/free-minecraft-skins-pe_GM479516143.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/minecraft-pe-hacks-2021_GM479516143.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/ios-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/coin-master-get-free-cards_GM406889139.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/www-robux-com_GM431946152.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/free-coin-master-glitches_GM406889139.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/robux-generator-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/rbx-gg-free-robux_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_off00002fb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FB0 22508 bytes
SHA-256: 2ccc52225738d38d58a9e2cb545f3ef0f89bf93009c16bcbebb175503169a875
font_01_sfnt_off000061bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61BB 19280 bytes
SHA-256: eba76068ff923171b8c2d5ff9157525e8019e656328bfda6f3420d16c3c73451

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