Malicious PDF — malware analysis report

Static analysis result for SHA-256 c32bb1c5349c2b87…

MALICIOUS

PDF

34.6 KB Created: 2021-06-27 00:05:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: da5670ae9fd1bd0ef94ee36f9262ed24 SHA-1: df574fd218259f1dcbc71aa2a74fe1c657f0f128 SHA-256: c32bb1c5349c2b873af890a91f9cab2231d7cd40f1d28c78d69491dc406c10d8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links to a redirector hosted at netcdn.co, which is associated with malicious activity. The document body and embedded links are designed to lure users into clicking these links by promising free game currency or hacks, such as 'Free Robux 2021'. The ML classifier strongly flagged this PDF as malicious, and the presence of redirector links indicates an attempt to deliver a second-stage payload or lead users to a phishing site.

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-robux-2021-game-hack In PDF document text
    • http://www.taxiaparis.fr/images/how-toget-free-robux-yt_GM431946152.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/free-roblox-outfits-2021_GM431946152.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/free-robux-generator-secure_GM431946152.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/minecraft-cracked-client_GM479516143.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/how-to-find-roblox-in-cheat-engine_GM431946152.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/backdoor-executor-roblox-free_GM431946152.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/pastebin-free-robux-fast-2021_GM431946152.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/how-to-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/how-to-have-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/how-to-get-free-roblox-toys_GM431946152.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/how-to-get-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/robux-free-not-clickbait_GM431946152.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/coin-master-hack-app-ios_GM406889139.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/how-to-hack-someones-roblox-account_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_off0000300d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x300D 22336 bytes
SHA-256: 36423c2766c8a61267d2040a8a33cb7dfdc56586c6302e64e483c3d6d82e15c5
font_01_sfnt_off000061cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61CB 19116 bytes
SHA-256: bd102244ffb40c6add567cd3640126a26b927334c4b0bdc73f6a542841550b4a

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