Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa944c5df027e484…

MALICIOUS

PDF

34.6 KB Created: 2021-06-26 08:42:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: db8139a1551c67120851b42df56ccffd SHA-1: c891370ace44034e05eb65a4e09aba694739e7e8 SHA-256: fa944c5df027e484331e2b031b3b010206f1f3289d156aff46a7bc333d7f7b2b
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 them by promising game-related benefits like free currency or hacks. The primary link redirects to known malicious infrastructure, indicating a phishing or scam attempt. While no scripts were extracted, the document's structure and embedded URLs strongly suggest a social engineering attack to drive traffic 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/how-to-get-your-hacked-roblox-account-back-without-email-game-hack In PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/thebuxian-you-have-robux-try-hack-today_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-hack-roblox-apocalypse-rising_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/get-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/if-you-delete-minecraft-can-you-redownload-it-for-free_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-money-generator-free-download_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-800-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-game-hack-kaise-kare_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-use-winrar-for-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/fe-dll-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-roblox-tix-hack_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-pe-hacked-client-download_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-daily-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-promocode-hack-2021-pastebin_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_off00002fda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FDA 21684 bytes
SHA-256: 79b9c084bdb59fcdeea9474999df3184a9fd17cd16ae81d669db2a838cfa3fb4
font_01_sfnt_off00005f2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F2B 20144 bytes
SHA-256: 6ce06f733ad4ed1c792302ef425e7fe9aeb6c9d065122f851e6aebfe92e32c93

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