Malicious PDF — malware analysis report

Static analysis result for SHA-256 beb31c91cf6931c4…

MALICIOUS

PDF

35.3 KB Created: 2021-07-02 04:14:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9ba0314361a62b8c1e74105a6baceda5 SHA-1: 88680be08d0c6b962b7617f824a288447e5dce25 SHA-256: beb31c91cf6931c471436a5cec7754caebf110b264d19bce6578806052812b5b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The ML classifier also flagged this PDF as malicious. The presence of numerous embedded URLs suggests a phishing or scam attempt designed to lead users to potentially harmful content or further malware downloads.

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/roblox-noclip-hack-game-hack In PDF document text
    • http://pustaka.ust.ac.id/repository/free-frog-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/coin-master-hack-version_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-roblox-mad-city_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/coin-master-hack-tool-no-survey_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-robux-hack-1-easy-step_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-robux-com_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-working-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-red-boy-hack-download_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/von-roblox-facebook-hacken_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-minecraft-skins-girl_GM479516143.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/coin-master-cheat-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/earn-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-hack-online-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-hacks-jailbreak-wearedevs_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000327e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x327E 22664 bytes
SHA-256: 254c87d03505218de4b762efda718b5125c33a242305ea9714b790ff0bc0369f
font_01_sfnt_off00006533.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6533 18952 bytes
SHA-256: e9a8ec9571d325c363288807652e0559e9ffd530f44a2d3f97e400f0d9130ba8

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