Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdb43fdfe38465ef…

MALICIOUS

PDF

35.9 KB Created: 2021-06-30 02:33:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0eb3c4f1d110dd7e8f53e099afb823fd SHA-1: 7466b33d47d66cd1884c439e74d6581b19245ffe SHA-256: fdb43fdfe38465ef184bfc231be9c65c7223d447793d8178c06430b44ed8fc22
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links and document body text that promote free game hacks and currency, specifically directing users to the URL http://netcdn.co/app/431946152/how-to-get-robux-for-free-code-game-hack. This URL is flagged as a malicious redirector, indicating a phishing or scam attempt. The ML classifier also strongly flagged this PDF as malicious.

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/how-to-get-robux-for-free-code-game-hack In PDF document text
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/roblox-adopt-me-building-hacks_GM431946152.pdfIn PDF document text
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/10-websites-like-no-human-verification-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/fly-cheat-in-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/roblox-engine-hack_GM431946152.pdfIn PDF document text
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/how-to-hack-in-roblox-jailbreak-2021-february_GM431946152.pdfIn PDF document text
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/hack-roblox-vermillion_GM431946152.pdfIn PDF document text
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/roblox-codes-for-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/gravity-hack-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/roblox-account-hack-password_GM431946152.pdfIn PDF document text
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/how-to-hack-onto-someone-elses-account-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/how-to-hack-stats-in-roblox-games_GM431946152.pdfIn PDF document text
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/dragon-ball-ultimate-roblox-max-stats-hack-2021_GM431946152.pdfIn PDF document text
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/roblox-counter-blox-roblox-offensive-free-skins_GM431946152.pdfIn PDF document text
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/best-roblox-games-with-free-beatbox_GM431946152.pdfIn PDF document text
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/hack-de-roblox-robux-gratis_GM431946152.pdfIn PDF document text
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/redline-cheat-in-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/666-roblox-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_off000033a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33A2 22760 bytes
SHA-256: af34413d38a0a230c211398177095b52449176412b288bf8c86db10d5a2c5350
font_01_sfnt_off000066d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66D2 19156 bytes
SHA-256: d214f7732b3f673484600aa84c896d4a0d4e079d046e1170f1851c9287778356

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