Malicious PDF — malware analysis report

Static analysis result for SHA-256 b68fbe81f508d658…

MALICIOUS

PDF

48.9 KB Created: 2021-05-12 18:15:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: abe8f2c1f9b6f8a5d7aab97a43b86332 SHA-1: c92c9d9f7b8057b4cc1c1ffc837242426f79c3af SHA-256: b68fbe81f508d658bea7fe146a8b713f285ab64587ee8faf64a033cc11da1738
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and free items. The primary malicious URL identified is https://netcdn.xyz/app/431946152/robux-website-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to trick users into visiting potentially harmful sites, likely as part of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9228

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.xyz/app/431946152/robux-website-game-hack In PDF document text
    • https://www.repository.ptiq.ac.id/repository/archery-master-3d-hack-unlimited-coins-cheats_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/free-roblox-adopt-me-pets_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/is-minecraft-free-on-computer_GM479516143.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/coin-master-free-spins-links-app_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/minecraft-hack-ios_GM479516143.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/game-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/coin-master-free-box_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/coin-master-hack-ios-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/is-there-an-actual-hack-that-work-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/wurst-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/how-to-log-out-of-coin-master_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/is-coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/roblox-admin-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B6F 30248 bytes
SHA-256: 773705d31e5415410c8c336e0a6a286027c74cd7f95d4f1c5f53d00e09139ef2
font_01_sfnt_off0000902a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x902A 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00009cd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CD2 18272 bytes
SHA-256: 1ae50648251854cf2b5f6d673040f92ab272238369d93beebc93d4b5f3967746

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