Malicious PDF — malware analysis report

Static analysis result for SHA-256 98cc56c8775d72c1…

MALICIOUS

PDF

44.1 KB Created: 2021-06-03 10:47:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8f690db9740ed7eee6167dcff0e9af76 SHA-1: 6908018307e593241d2644d0a78fd72fff5ec0f0 SHA-256: 98cc56c8775d72c1e358f8234f36bbc95b4673a394a7717178c18c92b35cdc67
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a primary focus on a link related to 'free spins for Coin Master game hack'. The ML classifier strongly flagged this PDF as malicious. The presence of a 'download button' heuristic further supports the likelihood of a malicious download or phishing attempt. No scripts were extracted, but the document's content and URLs suggest a lure for potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/where-can-i-get-free-spins-for-coin-master-game-hack In PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-free-spins-2021-hack_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-back-accessories-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-roblox-accounts-that-work_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-free-stuff-links_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/send-me-500-2021-spins_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-spins-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-link_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/smart-lodhi-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/robux-com-free_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/earn-points-for-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/easy-roblox-today_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/como-hackear-coin-master-gratis_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/fb-coin-master_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/robux-free-com_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000052ce.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52CE 24216 bytes
SHA-256: cbacaf7b288b3c37ef6d72b4228c560b5e7e3b83feff9f1acfe2cb8e78e7407b
font_01_sfnt_off00008a2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A2C 18248 bytes
SHA-256: 8779a24c74e66c23b33121dd1a71955adfc2f322ab09b0870da4a74651533123

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