Malicious PDF — malware analysis report

Static analysis result for SHA-256 990da6be105915e9…

MALICIOUS

PDF

34.4 KB Created: 2021-06-13 22:15:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d1106cb6b1d312ada40daf75be636fc1 SHA-1: 627bc06fb985d646625621b41d80b5c3e135da3b SHA-256: 990da6be105915e9203b97e4253dbd94c78f9db06e41e516e127237cdac7bca2
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs that redirect to malicious infrastructure, masquerading as game hacks and generators. The primary lure URL is http://netcdn.co/app/431946152/mad-city-cheat-codes-season-2-roblox-website-game-hack, which is flagged as a malicious redirector. The document body and embedded links reinforce this lure by referencing game cheats and free items, aiming to trick users into clicking through to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 3

  • 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.
  • 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/mad-city-cheat-codes-season-2-roblox-website-game-hack In PDF document text
    • http://opac.stiesa.ac.id/repository/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/free-roblox-gift-card-codes-2021-june_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/roblox-inappropriate-games_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/coin-master-hack-tuts_GM406889139.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/bux-gg-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/how-to-traversed-wall-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/cool-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/easy-roblox-today_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/free-spiderman-outfit-on-roblox_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/roblox-free-robux-claimer_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/free-modded-minecraft-server_GM479516143.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/coin-master-update-2021_GM406889139.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/free-roblox-passwords-2021_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/play-roblox-for-free-on-google_GM431946152.pdfIn PDF document text
    • http://opac.stiesa.ac.id/repository/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004844.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4844 27108 bytes
SHA-256: a13ce8b013c33a7185d05df1cd23c5578be481f26cf4058c33e447280b5ab411

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