Malicious PDF — malware analysis report

Static analysis result for SHA-256 8911fa05b3e14826…

MALICIOUS

PDF

44.6 KB Created: 2021-06-04 04:25:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d124d69a7c98a7eb24396e886eff65cf SHA-1: 27687044a3e3f7baa18be28566fe754a4e0c9049 SHA-256: 8911fa05b3e148266eddec999a22fd88089b1e8a0a710fb3f0394f6663bca9d9
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 0.9865

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 https://netcdn.online/app/406889139/coin-master-game-hack-game-hack PDF link annotation
    • http://digilib.unla.ac.id/repository/coin-master-app-free-download_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-robux-no-ads_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-coin-master-spins-no-verification_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/150-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-hack-without-human-verification-india_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/pubg-uc-carding_GM1330123889.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-game-hack-version-download_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-robux-android_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-followers-for-tiktok_GM835599320.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/robux-xyz_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-invite-friends-free-spins_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
stream_004_off00005247.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5247 25232 bytes
SHA-256: 95b04b58e90f1f4a5c1dd7a25ace570910fe2f546fadc75b6886ad7868cc51b0
font_01_sfnt_off00008cbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CBD 17976 bytes
SHA-256: 4c1d26c1fb4feed8092d99a8761960172faa49b0c213e7324f16c91828cd6f14

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