Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2f9b0340e889f32…

MALICIOUS

PDF

34.7 KB Created: 2021-06-28 20:39:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 74da8a5e1a59772c3e8f9145887e6599 SHA-1: 1f13f8b0821c3df9289323efbe501daafa83dacc SHA-256: e2f9b0340e889f327ea7e0703443733f4d4667ae13ece64a296dd39f45337523
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including a critical one to a known malicious redirector infrastructure at http://netcdn.co/app/431946152/free-robux-c-game-hack. This lure is designed to trick users into believing they can obtain free game currency or hacks. The presence of numerous similar URLs suggests a broad phishing or scam campaign.

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-robux-c-game-hack In PDF document text
    • http://library.umuslim.ac.id//repository/strucid-aimbot_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/free-roblox-glasses_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-hack-google-chrome_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/do-robux-generators-work_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-breaking-point-hack-script_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/cpbildco-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/100-free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-fun-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/mcpe-master-unlimited-coins-hack-apk_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/how-often-pubg-uc-advance_GM1330123889.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-get-free-robux-with-pastebin-2021_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/tiktok-free-package-dialog_GM835599320.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-free-spin-software_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/cheat-engine-16-roblox_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/can-you-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/does-cheat-engine-wk-on-roblox-any-more_GM431946152.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
font_00_sfnt_off000031ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31ED 22476 bytes
SHA-256: 2647f5150e9924f4950a2fa519cee6851b8671a7e193fdc16999a3887c471c3e
font_01_sfnt_off000063c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63C6 18716 bytes
SHA-256: ae86725dd70d168e8b5a24377d7effb3bd88f81667aa3e091abc0f5759eb354b