Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6be6d357b05065d…

MALICIOUS

PDF

33.7 KB Created: 2021-07-04 12:22:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fb80ffd2578c729a351c60864c9fc36b SHA-1: 51db742dfc5e084f445af28ff66a6cedc0c5dcdd SHA-256: d6be6d357b05065d4010384b37539580f150cb665d10aa9f8815c25872d3a29a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to a malicious domain, likely to trick users into downloading malware or visiting a phishing site. The heuristic firings indicate the PDF is designed as a lure for game-related cheats or currency, and the ML classifier strongly supports its malicious nature. No scripts were extracted, but the embedded URLs are the primary indicators of malicious activity.

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/431946152/instantrobux-game-hack In PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/download-games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/holiday-crown-roblox-free_GM431946152.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/black-t-shirt-free-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/roblox-free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/free-spins-coin-master-links-thursday-november-28-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/robux-offer-wall_GM431946152.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/free-robux-site_GM431946152.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/hack-de-roblox-2021-jailbreak_GM431946152.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/coin-master-hack-spins-app_GM406889139.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/roblox-comcom_GM431946152.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/coin-master-free-coins-link-facebook_GM406889139.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/free-robux-inpect-console-working_GM431946152.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/minecraft-free-edition_GM479516143.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/apps-that-can-hack-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-games-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/roblox-world-hack_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_off00002e68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E68 22244 bytes
SHA-256: 5710cd34c8c3782e26e2071cbb740df391a5beccb395927c3409a4411703f1ce
font_01_sfnt_off00005faf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FAF 18656 bytes
SHA-256: 5a13a4ba7d4aa3ba564163d7fd1f4e40de414e0c8b16d10ac9018e4301010f0d

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