Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3c45d81e8d9b056…

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 19:42:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 579eafb944d3dcb66f5eaffbdac8ba3d SHA-1: 0a90f3b35988a1eb48a42332870215e9be30037f SHA-256: f3c45d81e8d9b056ad785d35a06d80959d5e12f7b13a04590c5914e1191b5b0b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and generators, specifically mentioning 'Roblox No Download Hack'. It contains multiple embedded URLs, with the primary one being http://netcdn.tw/app/431946152/roblox-no-download-hack-game-hack, which is flagged as a known malicious redirector. The document's structure and embedded links suggest an attempt to trick users into visiting malicious sites, likely for credential harvesting or malware distribution.

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/roblox-no-download-hack-game-hack In PDF document text
    • http://lib.uho.ac.id/library//repository/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/minecraft-book-collection_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/hack-coin-master-dzooka_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-roblox-cards-pin-number_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-hack-ios-10_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/woman-roblox_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/pokemon-go-free-evolve-with-trade_GM1094591345.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-vpn-for-minecraft_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/how-to-hack-pubg-mobile-unlimited-uc-without-human-verification_GM1330123889.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-money-hack_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-make-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-can-i-get-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-link-daily-get-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/master-coin-hack-mod_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/minecraft-pe-017-0-apk-free-download-android_GM479516143.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_off00002fee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FEE 22108 bytes
SHA-256: 7714a4ecc4a6bb762f165ad88e90fcf16bd834cceadaddf219e2350bc62ac3b3
font_01_sfnt_off00006105.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6105 19160 bytes
SHA-256: 38656f57ea632c5ae9aff0990ef32f47b4b1b394188ef10efa33bf9d5ff74d0d

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