Malicious PDF — malware analysis report

Static analysis result for SHA-256 987a02c7f7af86a9…

MALICIOUS

PDF

51.5 KB Created: 2021-06-08 17:15:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cd00168ef240239695836ed11729cbe3 SHA-1: e03cde9ceb8cbc45ecde03ca2a179bf6d02399bb SHA-256: 987a02c7f7af86a978d8668c39afcae6d08004c2d046827fe3b70e5d6e60135d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks or free generators. The primary lure URL is https://netcdn.tw/app/431946152/how-to-get-free-money-on-arsenal-roblox-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious redirector chain designed to lead the user to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9327

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/how-to-get-free-money-on-arsenal-roblox-game-hack In PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/doctor-louie-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-free-spins-glitch_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/10-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/get-roebucks-com_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/give-me-robux-now_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-hack-cheat-generator-d_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/send-me-500-2021-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/roblox-free-items-glitch_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/roblox-download-pc-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/100-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-real-free-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-daily-link_GM406889139.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/robloxs-how-to-get-free-tbc_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/how-to-make-a-shirt-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-hack-extension_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-hack-pro-gamers_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_off00005091.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5091 32360 bytes
SHA-256: f72db536973941107bfc560340ab6cc9bcbd65b135f4d1541df1a0e563c3933e
font_01_sfnt_off0000980f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x980F 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off0000a521.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA521 18820 bytes
SHA-256: a187cde79f7f6bf200252f2e04e8119095fec4e75aa2ac6b45353485e1df8531

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