Malicious PDF — malware analysis report

Static analysis result for SHA-256 f42b450a0f5a5837…

MALICIOUS

PDF

43.4 KB Created: 2021-06-03 07:46:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: a4e2bfa03904d54d68935bf3d93ea0fc SHA-1: 7439ce8b8ec5ce5bfaf66c4cfc1f382356d988d6 SHA-256: f42b450a0f5a58377a3ac9f0b1e72e9179edb4f318d5188142edf88323781269
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. It uses a fake browser/software-install 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/406889139/coin-master-hack-2021-link-game-hack PDF link annotation
    • http://digilib.akbidarrahma.ac.id/repository/como-hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/roblox-trolling_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/coin-master-hack-tips_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/hack-to-send-gold-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/robux-in_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/coin-master-35-2-hack_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/coin-master-hack-apk-35-11_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/roblox-adopt-me-hacks-2021_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/coin-and-spin_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/coin-master-hack-without-root_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/windows-10-minecraft-free-with-java_GM479516143.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/roblox-data-breach_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/coin-master-hack-no-root_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/real-free-robux-codes_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
stream_004_off00004e8d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E8D 24708 bytes
SHA-256: 62539cb47713c839fb2a6f0fa77c7a832e1e0fb586bce41b9c059109219bded3
font_01_sfnt_off00008739.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8739 18116 bytes
SHA-256: 17974cef81917e5ef69542194afa433aff210173cc902887fbc2b56a9328dd03

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