Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cc1bfb2d18c2c53…

MALICIOUS

PDF

35.0 KB Created: 2021-07-06 12:56:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2db3c547b08a83d2e2d0cac4deb1c1df SHA-1: 6d03003031a0a78584ab05c5e92101eee161912f SHA-256: 5cc1bfb2d18c2c5346bbba83fbf3109c026d827128b2f83d2c7ca37c2c8c9f4c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple links to known malicious redirectors, disguised as game hacks and generators. The document body explicitly mentions 'Get Robux Today' and includes a primary malicious URL. This indicates a phishing or scam attempt designed to trick users into visiting a malicious site, likely to download further malware or engage in fraudulent activity.

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/get-robux-today-game-hack In PDF document text
    • http://pustaka.ust.ac.id/repository/free-robux-fun_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-mac-cheat-engine_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-cheat_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/sentinel-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-hacke-auf-spaghetti-id_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-minecraft-account-reddit_GM479516143.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/pokemon-go-free-incense-2021_GM1094591345.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/hacks-roblox-descargar_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/spin-and-coin_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-robux-that-works-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/my-roblox-account-has-been-hacked_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-free-robux-no-real-money_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-use-cheat-engine-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/hacked-roblox-client-windows-10_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-robux-inspect-code_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/cheat-engine-roblox-jailbreak-2021_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_off00003131.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3131 22592 bytes
SHA-256: 293dbdf559013a08cad96dc978916d69378620ca07cac41887a42de340c969f7
font_01_sfnt_off000063d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63D6 19012 bytes
SHA-256: 9215c9201218ab6c8d10252376bfc8cd06165ecb9060389a52a88ae940a9f8ad

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