Malicious PDF — malware analysis report

Static analysis result for SHA-256 48bec9ca2e520288…

MALICIOUS

PDF

34.1 KB Created: 2021-07-06 08:05:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: feb460b4c331fecf6c6fc36c057f95f4 SHA-1: 7d853cf597b93adb471510fe20a00b5c783eb7af SHA-256: 48bec9ca2e5202887c4ef063edff6f97ca65aeb41127b68a3c8c684c5c0cad35
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains a lure for a 'free generator / game hack' which redirects to malicious infrastructure. The document body and embedded URLs reinforce this lure, aiming to trick users into visiting a potentially harmful site. The ML classifier strongly indicates maliciousness, and the overall pattern suggests a phishing or redirection attack.

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.tw/app/406889139/how-to-get-more-spins-on-coin-master-hack-game-hack In PDF document text
    • https://library.stikeswnpalu.ac.id/repository/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-free-spins-link-june-2021_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/multiplayer-master-hack-coins_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-spin-app-coin-master_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/pokemon-go-free-150_GM1094591345.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-free-cards-and-spin-link_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-to-get-free-robux-greenlegocats123_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-to-hack-roblox-grand-blox-auto_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-rc7-command-hack-2021_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-generator-2021-robux-hack-no-survey-updated_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-unlimited-health-hack_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/hacks-to-steal-robux-sign-up_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-forsaken-sword-3-hack_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/get-free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-to-get-rogue-lineage-for-free-roblox_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-private-minecraft-server_GM479516143.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/como-instalar-hacks-para-roblox-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_off000030fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30FE 22232 bytes
SHA-256: 054b8234b4015d3f8ec9653c113538949228223fdcbc91a55af8c5a84774f709
font_01_sfnt_off00006236.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6236 18344 bytes
SHA-256: c10bbac0f74f0860f868df31348c10296c9c1874b0e58b464a19f5bbe73675af

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