Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b86ffc42b4e02e…

MALICIOUS

PDF

48.5 KB Created: 2021-06-11 05:57:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-28
MD5: 3d9700170539a04100e0ad521a06b54c SHA-1: 13dae2df1ccfa0048df46c3ee5bfb88a4be7671c SHA-256: 72b86ffc42b4e02e25be2aa65a02e3f81cffd6f0fd83af98423693a27dd9b5bb
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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/free-robux-pastebin-com-game-hack In PDF document text
    • https://www.labdagatismk1pundong.com/repository/how-to-get-free-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/free-spin-and-coin-blogspot-com_GM406889139.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/gold-cards-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/wurst-115-2_GM479516143.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/how-do-you-get-roebucks-for-free_GM431946152.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/roblox-script-executor-free_GM431946152.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/free-rare-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/roblox-demon_GM431946152.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/coin-master-hack-ios-app_GM406889139.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/free-spins-coin-master-twitter_GM406889139.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/coin-master-golden-card-hack_GM406889139.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/how-to-hack-robux_GM431946152.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
stream_004_off000054e6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x54E6 25412 bytes
SHA-256: d5b0f6c21a1eac7f302502ac991517266e27cd5afabfe9ab768b5610abb4bf4e
font_01_sfnt_off00008fb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FB2 2844 bytes
SHA-256: a66b570a908761b39e6d9e18bcb667c353840a86c6a7db528f79d01abe6b23a1
font_02_sfnt_off00009958.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9958 18880 bytes
SHA-256: 501eefae580b87d77c6731fe7be09eee37c7195df3a3e79c36de93b39e09baf7

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