Malicious PDF — malware analysis report

Static analysis result for SHA-256 d052b57339f46439…

MALICIOUS

PDF

34.4 KB Created: 2021-06-26 07:41:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9d28868b48877c7177f454afb6165c4b SHA-1: adb0634ff7b9edc439c79e420d546fe43f9f90c0 SHA-256: d052b57339f4643978cbb5ca738eaf8d3c823c26abbfc0074789aa5c530b8130
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game currency and hacks to trick users into clicking malicious links. The document contains multiple embedded URLs, including a primary redirector at http://netcdn.co/app/431946152/free-roblox-toy-codes-2021-game-hack, which is flagged as malicious. The presence of these links and the 'game hack' lure strongly suggest a phishing or scamming attempt, likely leading to further malware downloads 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.co/app/431946152/free-roblox-toy-codes-2021-game-hack In PDF document text
    • http://library.fk.upnvj.ac.id/repository/get-free-robux-for-answering-questions-and-quizzes_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-shinobi-life-free-hack_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/modded-roblox-accounts-free_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/download-coin-master-apk-hacked_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/get-free-robux-easy-simple_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/no-human-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-roblox-robux-ohne-handynummer_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-make-free-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-get-free-penguin-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/www-roblox-free-com-generatoryolasite_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-tiktok-coins_GM835599320.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-legally-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/tiktok-free-fans-and-likes-app_GM835599320.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/youtube-how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-best-roblox-exploits_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_off00002e62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E62 22292 bytes
SHA-256: 7c599803ef2207bb3c4802df24708daaf5064f9addf069ab4bf167992b18a520
font_01_sfnt_off00006016.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6016 19404 bytes
SHA-256: d69dc009ca5c1a88d041a827f1c58a74829db1b517c4b80ace25ccdd541b8d6b

Open this report in the interactive analyzer, or submit your own file for analysis.