Malicious PDF — malware analysis report

Static analysis result for SHA-256 cafd61a9a7d95f5b…

MALICIOUS

PDF

34.3 KB Created: 2021-07-05 23:11:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d163c24a9cf5513393c54a0be9eac447 SHA-1: 741ea667f8a875d9bc310348e2daeab398a8b89f SHA-256: cafd61a9a7d95f5b35219d87a11144771d5f2851772de375103b104860fdbd1d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious websites, masquerading as game hacks and generators. The primary lure appears to be related to 'Roblox' and 'Coin Master' cheats. The document body and heuristics indicate a clear intent to redirect users to potentially harmful content, likely for phishing or malware distribution.

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/431946152/roblox-free-draw-game-hack In PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/mcpe-master-hack-coin-apk_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-vehicle-tycoon-cheats_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-hack-link_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-cheat-engine-alternative-apoc-rising_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-rich-in-roblox-accounts-with-limiteds-dump-2021-working_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-robux-without-downloading-apps-for-ios_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/cheat-robux-2021-pc_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/hack-de-roblox-robux-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/game-hacked-decal-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/cheat-codes-roblox-xbox-one_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/funny-roblox-characters-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-jailbreak-cheat-engine_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/cm-daily-spins_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/comment-cheat-les-robux-ilimit_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_off00002f9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F9A 22240 bytes
SHA-256: 78578dc8e6027eeb0da4d335ce0406cdbd5faefb96a192de7f389aca9accdfb3
font_01_sfnt_off00006128.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6128 18984 bytes
SHA-256: ec2ea9a8736fae87acb1370247e9a7da9f741958a69bc170a8fbb2ad6495d747

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