Malicious PDF — malware analysis report

Static analysis result for SHA-256 58330ccb76a9bcee…

MALICIOUS

PDF

32.7 KB Created: 2021-06-28 16:48:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3ae876dc48ab918b7f7d2a7f8d10faff SHA-1: ac46b072aa127710f70739df9be7f4ecca5d6806 SHA-256: 58330ccb76a9bceeb7528e332c5ecbdc4f559337bf71a6396be008855f09eec9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a known malicious redirector infrastructure, masquerading as game hacks and generators. The document body and heuristics indicate a lure for free game items, likely leading to a phishing or malware download site. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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-sans-face-roblox-game-hack In PDF document text
    • http://perpus.ar-rum.ac.id/repository/infinite-moneyz-roblox-injector-hack_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/how-to-change-your-username-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/syntetisia-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/free-roblox-assassin-knives_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/robux-com-hack_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/coin-master-attack-hack_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/minecraft-free-app_GM479516143.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-cheat-codes-for-jailbreak_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/free-gift-cards-2021-roblox-working_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/how-to-hack-jailbreak-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-slaying-simulator-level-hack_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/fluxbreak-roblox-free_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/free-robux-place_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/get-free-gift-card-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-game-what-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-hack-tool-site_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/free-100-robux-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/robux-survey_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_off00002d74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D74 21348 bytes
SHA-256: 3a5c1e46ca5531956af0bdc9093ed049460cbec01e92dfcab32156958781d330
font_01_sfnt_off00005bf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BF3 18652 bytes
SHA-256: 67ee6fd12650aef0da002857e96ec503bd0f8c6751c0a94d5c4c5807230b3157

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