Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8de9d7a29d0d126…

MALICIOUS

PDF

35.7 KB Created: 2021-07-03 11:34:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b08257ffbd1b4942682db2e693530987 SHA-1: 1e3f22775130e9c87ce0c331d999e84d4e5766b9 SHA-256: f8de9d7a29d0d1267cc1028e533bf50ac185816b0a2d7f89d7a669d2379a5f98
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The document body and embedded URLs strongly suggest a phishing or scam attempt, likely aiming to trick users into visiting malicious sites. No scripts were extracted, but the PDF's structure and embedded links are indicative of a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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.tw/app/431946152/how-to-get-free-robux-on-phone-game-hack In PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/free-fighting-roblox-game_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/free-views-tiktok_GM835599320.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/free-robux-stream-youtube_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/roblox-game-for-free-download_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/top-5-free-robux-websites_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/free-roblox-swordpack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/free-roblox-swords_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/roblox-hack-client-we-are-devs_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/how-to-get-free-robux-on-roblox-ipad-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/roblox-btools-hack-feb-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/new-cheat-emgine-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/free-gift-card-generator-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/roblox-in-cheat-ingine_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/code-for-roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/how-to-get-unlimited-robux-on-roblox-with-cheat-engine_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/free-robux-hacker-us_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_off00003216.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3216 23060 bytes
SHA-256: 2391087ebefe57634ff61310be5f4553095e0bd8cccdf10bc55b909fb56837a7
font_01_sfnt_off000065dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65DC 19304 bytes
SHA-256: aa366a8b430bfcb45c9bf263411bccf6e6397de5dc8c3d1b4c1ff1d910733f52

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