Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf09bf5cf91ee892…

MALICIOUS

PDF

53.7 KB Created: 2021-06-07 07:44:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d64f247925a214ba479018161291277a SHA-1: 91844266e7d8eb3041fe58d1b2b5c1a57487efbb SHA-256: cf09bf5cf91ee89214fd1fd8ddaed772b281006eda70329955af55101ac8638a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to external websites, masquerading as game hacks and generators. The primary link, https://netcdn.tw/app/431946152/roblox-lumber-tycoon-2-cheats-pc-game-hack, is identified as a malicious redirector. The document's structure and embedded links strongly suggest a phishing or scam attempt, likely aiming to lead users to malicious sites or download further malware. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9636

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 https://netcdn.tw/app/431946152/roblox-lumber-tycoon-2-cheats-pc-game-hack In PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/how-to-get-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/coin-master-game-hunter_GM406889139.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/coin-master-daily-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/hack-version-of-coin-master_GM406889139.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/how-to-get-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/how-can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/free-minecraft-bedrock-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/how-many-levels-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000527d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x527D 32948 bytes
SHA-256: f09e9d40cd447f29e8171a6f14ebb88118b20036995df5bd691ee9c5bc3e98fb
font_01_sfnt_off00009e6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E6A 6100 bytes
SHA-256: f866077ce59d6ea276f75e4af76daa2aab5f3a1a679df144776123d85664d65c
font_02_sfnt_off0000acf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACF6 19140 bytes
SHA-256: 42b833fe004d0ed45dcc2adb40363b21dfaa3be6c353c89164ec5f49c2a9af39

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