Malicious PDF — malware analysis report

Static analysis result for SHA-256 c96d567ee50fda38…

MALICIOUS

PDF

35.2 KB Created: 2021-07-03 11:36:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8a49c1ddb0ae3b7e301e836692d7e16f SHA-1: 54fc0311ea4044d0b77ec67880f4de6e99ebe47a SHA-256: c96d567ee50fda389d30e583e7e7b0fa0dad9b2b5e85dbf0f95cc23d3f89bf10
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to a known malicious redirector, disguised as a generator for game hacks. The document body explicitly mentions 'Free Coins And Spins Link For Coin Master' and includes the malicious URL, indicating a phishing or scam attempt. The presence of multiple links to similar lure content suggests a campaign focused on driving traffic to potentially malicious 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.tw/app/406889139/free-coins-and-spins-link-for-coin-master-game-hack In PDF document text
    • https://learning.min1rembang.sch.id/__statics/gudangsoal/files/coin-master-online-hack-link_GM406889139.pdfIn PDF document text
    • https://learning.min1rembang.sch.id/__statics/gudangsoal/files/free-roblox-t-shirts-that-are-cool_GM431946152.pdfIn PDF document text
    • https://learning.min1rembang.sch.id/__statics/gudangsoal/files/free-robux-hackcome_GM431946152.pdfIn PDF document text
    • https://learning.min1rembang.sch.id/__statics/gudangsoal/files/roblox-vehicle-simulator-hacks-2021_GM431946152.pdfIn PDF document text
    • https://learning.min1rembang.sch.id/__statics/gudangsoal/files/minecraft-for-macbook-free_GM479516143.pdfIn PDF document text
    • https://learning.min1rembang.sch.id/__statics/gudangsoal/files/roblox-accounts-for-robux-for-free_GM431946152.pdfIn PDF document text
    • https://learning.min1rembang.sch.id/__statics/gudangsoal/files/roblox-free-cafe-groups_GM431946152.pdfIn PDF document text
    • https://learning.min1rembang.sch.id/__statics/gudangsoal/files/windows-10-minecraft-free-with-java_GM479516143.pdfIn PDF document text
    • https://learning.min1rembang.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-35-11_GM406889139.pdfIn PDF document text
    • https://learning.min1rembang.sch.id/__statics/gudangsoal/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://learning.min1rembang.sch.id/__statics/gudangsoal/files/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://learning.min1rembang.sch.id/__statics/gudangsoal/files/ways-to-earn-robux_GM431946152.pdfIn PDF document text
    • https://learning.min1rembang.sch.id/__statics/gudangsoal/files/free-25-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://learning.min1rembang.sch.id/__statics/gudangsoal/files/free-roblox-accessories_GM431946152.pdfIn PDF document text
    • https://learning.min1rembang.sch.id/__statics/gudangsoal/files/pokemon-go-free-gps-hack_GM1094591345.pdfIn PDF document text
    • https://learning.min1rembang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • https://learning.min1rembang.sch.id/__statics/gudangsoal/files/free-roblox-vip-server-for-lab-experiment_GM431946152.pdfIn PDF document text
    • https://learning.min1rembang.sch.id/__statics/gudangsoal/files/emperor-cheat-roblox_GM431946152.pdfIn PDF document text
    • https://learning.min1rembang.sch.id/__statics/gudangsoal/files/app-that-gets-you-free-robux_GM431946152.pdfIn PDF document text
    • https://learning.min1rembang.sch.id/__statics/gudangsoal/files/give-free-robux_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_off000031c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31C4 23468 bytes
SHA-256: d640bf5d9f74ed961352b6d248e4f6857c079bf0e401744f669937491b929305
font_01_sfnt_off00006665.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6665 18520 bytes
SHA-256: af68958535bef8a7f877bb057461c88702ddd3919a92b01d467480f395616006

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