Malicious PDF — malware analysis report

Static analysis result for SHA-256 8380e9d2b0fa4398…

MALICIOUS

PDF

47.5 KB Created: 2021-06-08 23:28:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3394683862726e22e61ac76b85d0b775 SHA-1: 592788b94b1560ab40849d04cefbf3de120a7e8d SHA-256: 8380e9d2b0fa4398e6227dd0a458cabb61d32fa9f9f9efac2df835243b6ee35f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and game hack lures, indicating a phishing or scam attempt. The primary link directs users to a page promising 'top ten roblox hacks', which is a common lure for malware distribution or credential harvesting. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a malicious intent to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.tw/app/431946152/top-ten-roblox-hacks-game-hack In PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-34-4-hack-download_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/pubg-uc-midasbuy_GM1330123889.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-minecraft-mods-for-pc_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-daily-gift-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-spin-link-today-50_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-card-link-free_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-spin-no-offers_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-robux-master_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-game-free-download-for-pc_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/tiktok-free-wala-video_GM835599320.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/minecraft-mod-menu-apk_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-hacked-apk_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-free-spins-today-daily-links_GM406889139.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
stream_004_off00004e70.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E70 27340 bytes
SHA-256: 7dcd5e94c7a94ab2f59c543bd6298f23abd40e1de18dd4e9e8c5756cf48417d7
font_01_sfnt_off00008cb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CB5 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off0000969f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x969F 18356 bytes
SHA-256: 1c8e9537d8743e36e46e6b92b48331309d1ec29b114c55b353357015c9ef6ebe

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