Malicious PDF — malware analysis report

Static analysis result for SHA-256 abe1caaf9f90e08d…

MALICIOUS

PDF

41.0 KB Created: 2021-05-12 02:42:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d887cfd31f985a521a46c1a2dfef4401 SHA-1: a1ba7eeb40115206ae8154b9730ab9075a54b2bf SHA-256: abe1caaf9f90e08d3b1d023b8df54ccb51101c670e9bf81bebb214fbd5cd7919
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to websites offering game hacks and rewards, a common lure for malicious content. The ML classifier strongly flagged this PDF as malicious, and the embedded URLs point to known malicious redirector infrastructure. While no scripts were explicitly extracted, the PDF structure itself contains links that are designed to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/coin-master-email-rewards-game-hack In PDF document text
    • http://nebraskahospitalityhalloffame.com/images/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/roblox-bux-free_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/easy-robux_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/minecraft-pe-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/gamesofficenet-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/how-to-get-free-spins-on-coin-master-android_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/play-games-for-robux_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-pet-food-for-coin-master_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/2021-no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/500-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/minecraft-java-free-download_GM479516143.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-card-collection-link_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-hack-no-human-verification-2021_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
stream_003_off00004679.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4679 24284 bytes
SHA-256: 711fa9978d864c8d5335f17a31fcb95afad06ebe1333ec4f2e9e49ef41c9e531
font_01_sfnt_off00007dfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DFE 18216 bytes
SHA-256: e61fab9f8d99b46953a38bd9174b367a9798fa55ae4550c291f399d0802cd730

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