Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ef2494a4a311585…

MALICIOUS

PDF

35.6 KB Created: 2021-07-03 15:03:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3f7114c7320d6248afa91ec76b5dc7a4 SHA-1: 478936d42ccafdbcf1a02197bea04ea798daa595 SHA-256: 3ef2494a4a311585e46938f1c0048dea79aa010ca9f25b887e0c71659a7a9939
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded links that redirect to a URL associated with free game hacks and generators. The ML classifier and specific heuristics strongly indicate malicious intent, likely to lead users to scam or malware-hosting sites. No scripts were extracted, but the primary attack vector is the deceptive link within the document body.

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/rbx-gg-free-robux-game-hack In PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/free-old-roblox-account-new-may-2021-ebay_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/www-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/coin-master-70-spin-link_GM406889139.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/mcpe-master-coins-hack_GM406889139.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/free-coin-master-account_GM406889139.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/roblox-avatar-maker-free_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/microsoft-store-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/To-export-more-data-upgrade-to-a-Guru-or-Business-subscription-plan_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/free-unused-roblox-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/coin-master-hack-iosgods_GM406889139.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/free-roblox-com_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/roblox-boxing-simulator-2-hack-xbox_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/como-ser-hacker-en-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/rare-free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/fightforglorton-free-l-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003330.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3330 23188 bytes
SHA-256: 619969721c1b9bab421f1233c33f97aed8ef4cea9c69ac4e119490d3b3599962
font_01_sfnt_off00006750.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6750 18716 bytes
SHA-256: 5ed4a17f1e1f347672ac707c48d478a4e03b12aa7b666a188f58978ddccfd2a0

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