Malicious PDF — malware analysis report

Static analysis result for SHA-256 92eedc9cb4e2f4d3…

MALICIOUS

PDF

35.9 KB Created: 2021-07-05 20:10:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0fc4f68c2e09368663a64510b55c84a7 SHA-1: c0533dd31599818955697135d63c4600a63726f4 SHA-256: 92eedc9cb4e2f4d3103d657c1aa209b7d4e8f6c124474be3c1156d8a4ef65ebd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating it is a malicious redirector lure, specifically targeting users interested in game hacks and free currency. The document body and embedded URLs promote a 'free Robux generator' which redirects to a known malicious infrastructure. This suggests the primary goal is to trick users into visiting a compromised site, likely for further exploitation or credential harvesting.

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.tw/app/431946152/how-to-get-free-robux-without-downloading-any-apps-game-hack In PDF document text
    • http://lib.kunci.or.id/repository/300m-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-knife-codes-for-assassin-roblox_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-bloxburg-game-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/uirbx-club-roblox-robux-hack-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-gamepass-script-roblox_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/card-codes-for-free-generator-roblox_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-robux-only-pc_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/robux-now_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/robux-hacks-computer_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/apk-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/how-to-run-faster-in-roblox-hack-murder-mystery_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/legit-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/roblox-points_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/admin-commands-script-roblox-hack_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_off00003127.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3127 22720 bytes
SHA-256: 2bcdefbeebfe483e5ce0935552d8c157b8f1610d95c740dd55c28c5d84b2edb4
font_01_sfnt_off000063fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63FC 20240 bytes
SHA-256: 297e40e48bf98f909157546786ed8ef6c846caf78719244298106c3264496c18