Malicious PDF — malware analysis report

Static analysis result for SHA-256 445fdbfe5bf4a0ce…

MALICIOUS

PDF

43.3 KB Created: 2021-06-03 09:47:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9cc11841f4c3275f3348a88b3726252d SHA-1: 0c2f115b70058bfdc0fba35d76e041f13d96bcff SHA-256: 445fdbfe5bf4a0cea5f1fa934fa03ef1b5786d8be6ed36953eb04c9ec330f30b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains links designed to lure users into clicking on what appears to be a game hack generator, but which redirects to malicious infrastructure. The ML classifier strongly supports the malicious nature of this PDF. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to download further malicious content or lead the user to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.online/app/479516143/simplysarc-game-hack In PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/free-cracked-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/free-robux-working_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/minecraft-survival-free_GM479516143.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/coin-master-hack-ios-apk_GM406889139.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/coin-master-real-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/how-to-hack-coin-master-in-pc_GM406889139.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/how-to-get-free-pets-in-adopt-me-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/coin-master-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/get-robux-now_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/free-robux-sites-that-work_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
stream_004_off00005034.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5034 24688 bytes
SHA-256: 671435acd78f0b99d69f6d2013d4def3a4caf71b47a0d3c1f59ee1a9de60feca
font_01_sfnt_off00008771.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8771 18156 bytes
SHA-256: d1e3c8cc46daa8b4e8a3620fd036fa3afc0951971ec214e12238e772f71f3550

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