Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a8452f5e74ae709…

MALICIOUS

PDF

34.1 KB Created: 2021-07-05 21:52:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8d9fd6924ea3ba1954d6ab1a96b1c647 SHA-1: 21e6d96f3f9e11c7e5e8d7188955567adf4039cb SHA-256: 1a8452f5e74ae70905ff4f53509c32abc4373002aeb671692efb6f504d2eb314
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/406889139/pasos-para-hackear-coins-master-game-hack PDF link annotation
    • https://opac.umrah.ac.id/repository/minecraft-apk-download-free-11-055_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-do-you-hack-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/denisdaily-skin-roblox-free_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-sights_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/ar-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/cheat-codes-for-roblox-mad-paint-ball_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/robux-free-for-android_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-account-hacker-no-download_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/auto-walk-roblox-hack_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/november-hack-for-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/get-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/watch-videos-for-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-attacks-on-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-official-fan-page_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-the-northern-frontier-hacks_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_002_off00002e8d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E8D 23196 bytes
SHA-256: aa082fb0dbc264e9571e05e218e7a032fd212225ca05a7252035e3bf4a1b819e
font_01_sfnt_off0000631b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x631B 18160 bytes
SHA-256: 8de320d26ad23d14df74f7a15048384cdc3d2e03834f709f531179936ba98ebc

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