Malicious PDF — malware analysis report

Static analysis result for SHA-256 158e9099044aca99…

MALICIOUS

PDF

36.7 KB Created: 2021-06-03 23:30:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 29e8352364041a33d898cd8f97567ed5 SHA-1: 0c7a894b8934ad6acca8ebf8ee1d6e1a91b2f78b SHA-256: 158e9099044aca99a0b46a0dc366abd024331e9e4cb1a69deef13badb7f5078b
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to a known malicious redirector, designed to lure users into clicking on game hack or free spin generators. The primary malicious URL identified is https://netcdn.online/app/406889139/how-do-you-get-free-daily-spins-on-coin-master-game-hack. Although no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious redirection, likely intended to deliver a secondary payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 3

  • 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.
  • 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/how-do-you-get-free-daily-spins-on-coin-master-game-hack In PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/script-executor-roblox-free_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-robux-download_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-gold-cards-coin-master_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/minecraft-kill-aura_GM479516143.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/rbx-sites_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-mod_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/www-cheatsk-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000054e3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x54E3 25404 bytes
SHA-256: 7523a3579a6557b649b2196c9cbf3622d36254b02a881498911f433977fdd52e

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