Malicious PDF — malware analysis report

Static analysis result for SHA-256 533a3dafa73850f1…

MALICIOUS

PDF

32.8 KB Created: 2021-06-28 09:05:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 85a2f550e91dd69795071c75d55d0e7a SHA-1: e4e2c2ac12e9d95e6d88b23e74d156c5d3618ef4 SHA-256: 533a3dafa73850f11125c6d9497d49f9efbc3d7949219c9d05d20a9c6772368c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector at http://netcdn.co/app/431946152/how-to-hack-roblox-servers-2021-game-hack. The document body and heuristics indicate a lure related to game hacks and generators, suggesting the intent is to redirect users to potentially malicious websites for further exploitation or credential harvesting. No scripts were extracted, but the embedded URLs and redirector findings are strong indicators of malicious intent.

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-hack-roblox-servers-2021-game-hack In PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-items-on-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-games-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-cheats-and-hacks_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-game-guardian_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-create-group-in-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/emperor-cheat-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/forsaken-sword-legices-2-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-earn-free-millons-of-robux_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/rbx-points-get-free-robux-points_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-heaven-links_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-earn-robux-fast_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-34-6-hack_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-game-free-download-for-pc_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-hack-csgo_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/hack-coin-master-1_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-roblox-items-codes_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-no-human-verification-generator_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_off00002c68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C68 20996 bytes
SHA-256: 7f0aca611faf5800fa70480f882f93b571ddc6bff58985eafe9b12b3088af5ca
font_01_sfnt_off000059ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59EA 19336 bytes
SHA-256: f144bd31418b3490c26dfb5315175257861a5024e96a304be42907f63c6212e5

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