Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c6a4f9322dbb640…

MALICIOUS

PDF

34.4 KB Created: 2021-06-20 00:13:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 69fb8c27421eaf73619aa1af3ad2d019 SHA-1: 780ca4e6763c6d136fa0644aa9969333f047376f SHA-256: 6c6a4f9322dbb640468e8a264bea13f0df075c56b18734990e857b0da8a6e37a
160 Risk Score

Malware Insights

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

The PDF document contains multiple links to known malicious redirectors, disguised as generators for game currency or hacks. The primary lure is related to 'Roblox Studio Free Download' and 'game hack', aiming to trick users into clicking through to potentially malicious sites. No scripts were extracted, but the embedded URLs and the nature of the lure strongly suggest a phishing or scam attempt.

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.co/app/431946152/roblox-studio-free-download-for-windows-game-hack In PDF document text
    • http://repository.ummy.ac.id/repository/roblox-cheat-engine-mac-download_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/roblox-hack_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/robux-hack-generator-2021_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/horizon-money-hack-may-2021-roblox_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/free-robux-easy-for-kids-fornoobs_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/free-code-for-roblox-december-2021_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-roblox-money_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/roblox-cheat-rs-2021_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/daily-free-spins-coin-master-heaven_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-free-soins_GM406889139.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_off00002ee8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EE8 21844 bytes
SHA-256: 31b4cd516cc4ea771c4b1375a2b535f6a8402d7c1f211cd964ecf3843fe59e09
font_01_sfnt_off00005f24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F24 19716 bytes
SHA-256: 2c10f2526762801cdbe50eb588f5d3b4c48a3c91826fedb7b9cf3d644514dde5

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