Malicious PDF — malware analysis report

Static analysis result for SHA-256 10cb635e83e94a0b…

MALICIOUS

PDF

35.8 KB Created: 2021-06-28 16:52:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fee1510c27c5abc97529ada139f1c7bc SHA-1: 625bf347fc5f7516aad31c42005b1cae38283c13 SHA-256: 10cb635e83e94a0b888945dc1bdcaef97a744fabccb4f9ffe67436b1d19e47d4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising free game hacks and generators. The presence of a download button lure and the ML classifier's high confidence score indicate a malicious intent to trick users into visiting potentially harmful sites. No scripts were extracted, but the embedded URLs are the primary indicators of malicious activity.

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.co/app/431946152/free-roblox-game-cards-no-survey-game-hack In PDF document text
    • https://repository.stikesindramayu.ac.id/repository/hack-de-robux-2021-pastebin_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-robux-offers_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/how-to-hack-roblox-accounts-to-do-good-stuff_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/minecraft-pocket-edition-free-ios_GM479516143.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/how-to-hack-protect-jojo-roblox_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/tamper-monkey-roblox-hack_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/javascript-roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/obby-100m-free-robux_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/mejores-hacks-para-roblox_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-paint-hwo-to-draw-a-realist-eye-roblox_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/how-can-i-hack-roblox_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/how-to-get-free-robux-without-scams-2021_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-roblox-accounts-2021-with-robux-december_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/roblox-girl_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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
font_00_sfnt_off0000332a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x332A 22784 bytes
SHA-256: 8deac7714ccce8a91268d9ccd3a057f2a183866095788817dc83375b80c78766
font_01_sfnt_off00006583.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6583 19516 bytes
SHA-256: 1d3b01de601f0e4a49eeafbd4c89a4eca8cdfc09438ce992a8eefad40fdf650f

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