Malicious PDF — malware analysis report

Static analysis result for SHA-256 235b73c8e78d4828…

MALICIOUS

PDF

35.5 KB Created: 2021-06-23 05:34:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 02ce7b3908d913ef82eabeb4553e5e26 SHA-1: a6c7761c50efe0a3a3258ae61637f85eae2f6a85 SHA-256: 235b73c8e78d482810fa3c90be744590ee4ffe1bef937c3fb81efa4c6582d8e0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of 'free Robux' and 'game hacks' to entice users. It contains embedded links that redirect to malicious infrastructure, specifically http://netcdn.co/app/431946152/free-robux-with-fake-name-game-hack, which is identified as a malicious redirector. The document's structure and embedded URLs suggest it is part of a phishing or scam campaign designed to lead users to potentially harmful sites.

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-with-fake-name-game-hack In PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/free-robux-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/how-to-add-mods-to-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/hacks-for-roblox-mobile_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/minecraft-pe-hacked-client-download_GM479516143.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/free-spin-link-for-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/coin-master-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/btools-hack-roblox-download_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/free-face-roblox_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/how-to-free-catalog-items-in-roblox-no-copy_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/robux-online-free_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/town-roblox-hack_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/goku-roblox-free_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/d-day-cheats-roblox_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/free-robux-without-human-verification-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_off0000311d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x311D 22612 bytes
SHA-256: 05f9386d693f49b4f842696d2ed85fa0bb38868d945d66ac96fc602e2431796c
font_01_sfnt_off000063d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63D7 19736 bytes
SHA-256: 4e58909ee7bba185ec32fbbf88806bde717c5fc136952112501ecf950d23ea8b

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