Malicious PDF — malware analysis report

Static analysis result for SHA-256 33a8de50bd41e07e…

MALICIOUS

PDF

32.4 KB Created: 2021-06-26 16:47:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9eb039031530bd43704754c9bd06a868 SHA-1: fbac7bd4174d682916627a46515c5431d5a77651 SHA-256: 33a8de50bd41e07ef22f985e5d6813b411d0d0274e81620b5f0a6eb8c1e3cc86
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on what appears to be a "Roblox Hack" or "Robux Generator". The primary link, http://netcdn.co/app/431946152/roblox-hack-no-downloading-games-game-hack, is identified as a malicious redirector. The document body and embedded URLs reinforce this lure, aiming to drive traffic to potentially malicious sites or download further malware. No scripts were extracted, but the PDF structure and embedded URLs strongly indicate a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/roblox-hack-no-downloading-games-game-hack In PDF document text
    • https://perpus.uwhs.ac.id/repository/robux-fun-hack_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/codes-thst-give-you-robuxs-no-hacks-no-downloads_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/free-private-minecraft-server_GM479516143.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/minecraft-server-free-trial_GM479516143.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/how-to-hack-any-account-roblox_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/coin-master-32-android-mod-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/roblox-hack-snow-shoveling-simulator_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/roblox-latest-version-free-download_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/minecraft-hacked-apk_GM479516143.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/i-was-hacked-in-roblox_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/flamingo-free-shirt-templates-roblox_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_off000029db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29DB 21344 bytes
SHA-256: 952170b1d4a01a971720e73f1ba3563502532d9f6716ec19c3d8daef0bb23458
font_01_sfnt_off00005860.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5860 19540 bytes
SHA-256: 5ae6461384e17f91bdc5332825be2741afe2fa799b950c9fffdf9ff58ffe45b6

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