Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a027a6441eb1c50…

MALICIOUS

PDF

34.2 KB Created: 2021-07-06 13:56:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8bf03c23d045411dc9b0ea113800c52a SHA-1: d844910994b326a485afc8549666ab7d6d6a9d69 SHA-256: 7a027a6441eb1c50681abe3a85c0ffafdacfc3ce215242f843667ef07b3c7fa7
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/431946152/free-roblox-gift-card-codes-2021-game-hack PDF link annotation
    • https://opac.umrah.ac.id/repository/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-gamepasses-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-robux-hack-download-for-mac_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-group-payouts_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-no-scam-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/dragon-ball-rage-roblox-cheat-engine-hack_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-free-robux-join-group_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/hack-xp-net-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/como-hackear-el-juego-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-robux-hack-online-generator-tool_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/worst-client_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-wall-hack-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/actual-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/radio-cheat-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-codes_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E08 22144 bytes
SHA-256: 71031230595d6cb12ce7ef624ca5720739f210c42f709da5da908e816644cad0
font_01_sfnt_off00005f2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F2A 19452 bytes
SHA-256: 8115ccb621edd4612311f62a2018219b20574293e23f0c1b138e5e1805582403

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