Malicious PDF — malware analysis report

Static analysis result for SHA-256 50084b26458e2766…

MALICIOUS

PDF

44.2 KB Created: 2021-06-11 03:44:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 82a2203f3b724319fa36fe2bc4fe6857 SHA-1: a38528779956ccb2de684c0144684e542fec1e46 SHA-256: 50084b26458e2766f597dff86aac96ca8fa1fcac43e8a435e37548eb08ee1b84
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game cheats, directing users to a URL that likely hosts a malicious payload. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs further supports a malicious intent. No scripts were extracted, but the overall structure and heuristics indicate a phishing or downloader attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/how-to-cheat-roblox-tycoons-game-hack In PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-heaven-links-free-spins_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-many-levels-in-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-free-robux-without-playing-a-game_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/spins-gratis-coin-master-hoy_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-online_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-robux-earn_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/pubg-500-uc-price_GM1330123889.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/pubg-uc-hilesi_GM1330123889.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-hack-online-pc_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-frappe-hack-script_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/watch-videos-for-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-hack-ios-no-human-verification_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-golden-card-hack_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004f04.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F04 25068 bytes
SHA-256: ba444010d6458b8650302cb9b60a07ea554ce92d0929b4a8c5bd2c860b23dcdf
font_01_sfnt_off000088e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88E6 18624 bytes
SHA-256: c7b94c714f3e7775e483be71a3086bbde1a6065db7f636aad347d8ee843ce589

Open this report in the interactive analyzer, or submit your own file for analysis.