Malicious PDF — malware analysis report

Static analysis result for SHA-256 54174931a198760c…

MALICIOUS

PDF

44.6 KB Created: 2021-06-03 07:38:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: cfd8b524d9dc5ea88e37a22affef923b SHA-1: 15e0b00009b5fdb3de8796d4dc54362184fff71f SHA-256: 54174931a198760c61f0dd3b939633e07a476f5c575560d2508b50e071f84f83
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses an urgency-based lure. 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 0.9865

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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 https://netcdn.online/app/431946152/robloxheroxyz-free-robux-game-hack PDF link annotation
    • http://pustaka.fti.unand.ac.id/repository/free-coins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/minecraft-free-download-pc_GM479516143.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/send-me-500-2021-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/unlimited-robux-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/roblox-pics_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/minecraft-pe-free-download_GM479516143.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/tiktok-like-bot-free_GM835599320.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/coin-master-hack-apk-2021-ios_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/free-spins-coin-master-2021-no-verification_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/free-roblox-website_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/free-minecraft-server-maker_GM479516143.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/coin-master-free-coins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/free-spin-link_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_off00004f1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F1A 26160 bytes
SHA-256: c5ca065b3520cc84d3bf583266fb434195ad846c428a5ba4f3f401d2e9fb367a
font_01_sfnt_off00008ae6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE6 18516 bytes
SHA-256: 7f1ed049da75acc608f0fe66657ee4628d82e762443bbdd60fa03b2ea4156da9

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