Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbe9d915b62709d8…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 15:03:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e87aa2b5a9f59829c324ac08c98b8910 SHA-1: d0634ff548643df4d5aea747d001eeb492bae7ee SHA-256: fbe9d915b62709d801483af5b2012343ddecff3cb6a87bfdb8c9e0a361078b9b
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/hiw-ti-hack-a-roblox-account-game-hack PDF link annotation
    • https://digilib.darmajaya.ac.id/repository/how-to-use-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/coin-master-free-spins-and-coins-app-download_GM406889139.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/coin-master-online-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/coin-master-cards-free-cards_GM406889139.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/free-roblox-usernames-and-passwords_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/what-is-robux_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/roblox-how-to-get-free-clothes_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/robux_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/hack-for-robux-just-but-ur-username-in_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/free-spins-coin-master-october-13-2021_GM406889139.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/free-robux-co_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/robux-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/free-robux-app_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/free-lvl-7-roblox-executor_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/online-hacking-tricks-coin-master_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_off0000316a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x316A 22164 bytes
SHA-256: 83c62d4bc94cac1440978961090c69aed589048a8cd3c0ddb75ff958170cce13
font_01_sfnt_off00006261.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6261 19184 bytes
SHA-256: 3d48173b864114ab839418bcd105ae23d25092b38290378a0d33ad05981ca5b7

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