Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ed51ea21ec55766…

MALICIOUS

PDF

32.8 KB Created: 2021-07-05 11:48:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 7179bd380db94458773118d661f00867 SHA-1: c883b8615cf174006c2e41d0688f152238066383 SHA-256: 5ed51ea21ec55766d98775bdacc9b54cf9c964d91eab11bebba541d2713d48af
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/479516143/free-minecraft-hosting-game-hack PDF link annotation
    • https://opac.umrah.ac.id/repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-hack-generator_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/robux-free-without-human-verification_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-spins-daily-link-game-mod_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/easy-hacks-on-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-obby-for-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-username-and-password-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/get-robux-free-generator_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-2021_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/hack-roblox-free-robux-pastebin_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-hack-free-robux-in-roblox-in-a-computer_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-robux-october-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/cheats-for-roblox-bee-swarm-simulator_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-a-lot-of-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/https-www-roblox-com-games-2021202180-free-admin_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-xbox-one-free-packages_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/spin-free-coin-master_GM406889139.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_off00002d6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D6C 22148 bytes
SHA-256: deb8d363e294252171e4903d5d1eefd559e868191475ec761297ad4c8d0ef43f
font_01_sfnt_off00005e59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E59 17996 bytes
SHA-256: bf6ae4c6721fa3eadf2b386a9cfec38fcd2e671f0767c49619a657aa344fd652

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