Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ed49842540da33b…

MALICIOUS

PDF

34.4 KB Created: 2021-07-04 12:33:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 951f5f65927132d487aa1634639a4984 SHA-1: fad50c33d26a0132670cdd413a04230dedf3bb89 SHA-256: 8ed49842540da33b208714a26f8eeb5c672d0f9e5854e0091d0222039f0c2bdb
160 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, with one prominent URL pointing to a download for a "coinmasterhack". The ML classifier strongly flagged this PDF as malicious, and the presence of a "download button" heuristic further supports a malicious intent. The document's content and embedded links suggest it is designed to trick users into downloading a second-stage payload, likely an application or exploit.

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/406889139/appsmobinfo-coinmasterhack-coin-master-hack-game-hack In PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/free-exploits-for-roblox_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-girl-hair-roblox_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/robux-online_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/roblox-hack-download-android-prison-life_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/ultimate-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-free-gift-cards_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/robloxfun-com-robux_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/strucid-aimbot_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/how-to-hack-coin-master-game-without-root_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/how-to-get-free-coins-and-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-free-spin-link-daily_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-hack-injection_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/blox-rewards_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-draw-alpha-roblox_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/bux-gg-free-robux_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
font_00_sfnt_off00003045.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3045 22532 bytes
SHA-256: 9ee4c3183c4e8d6c9241cf8bdc5c353bf94040d01155bb9674fa4bb287eaa0e5
font_01_sfnt_off00006267.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6267 18764 bytes
SHA-256: 59b05cf49ec26ce95dbcd7334d1e86eab09a9bb7e2639765bb6964a9511261fc

Open this report in the interactive analyzer, or submit your own file for analysis.