Malicious PDF — malware analysis report

Static analysis result for SHA-256 183efe36a255b608…

MALICIOUS

PDF

44.5 KB Created: 2021-06-04 00:31:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 557d359b2e20e0e8a1f31f800c3d69be SHA-1: 2ae0b20d080a1e74aee10e1e525dc68800cc1c4c SHA-256: 183efe36a255b608a49a71a2eeaa7a92b8e04d1a7dd9b246b4bc0a304cc79c1e
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/431946152/free-robux-hack-no-verification-game-hack PDF link annotation
    • http://pustaka.ffarmasi.unand.ac.id/repository/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.ffarmasi.unand.ac.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.ffarmasi.unand.ac.id/repository/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.ffarmasi.unand.ac.id/repository/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://pustaka.ffarmasi.unand.ac.id/repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://pustaka.ffarmasi.unand.ac.id/repository/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://pustaka.ffarmasi.unand.ac.id/repository/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.ffarmasi.unand.ac.id/repository/free-robux-legit_GM431946152.pdfIn PDF document text
    • http://pustaka.ffarmasi.unand.ac.id/repository/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.ffarmasi.unand.ac.id/repository/all-roblox-games-you-can-hack-with-proxo_GM431946152.pdfIn PDF document text
    • http://pustaka.ffarmasi.unand.ac.id/repository/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.ffarmasi.unand.ac.id/repository/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://pustaka.ffarmasi.unand.ac.id/repository/roblox-script-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.ffarmasi.unand.ac.id/repository/roblox-hacked-com-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.ffarmasi.unand.ac.id/repository/free-tiktok-fans-and-likes_GM835599320.pdfIn PDF document text
    • http://pustaka.ffarmasi.unand.ac.id/repository/how-to-hack-awsomeeaglefox25-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.ffarmasi.unand.ac.id/repository/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.ffarmasi.unand.ac.id/repository/robux-com-free_GM431946152.pdfIn PDF document text
    • http://pustaka.ffarmasi.unand.ac.id/repository/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
    • http://pustaka.ffarmasi.unand.ac.id/repository/how-do-u-get-free-robux_GM431946152.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_off0000514e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x514E 24660 bytes
SHA-256: 06581778ac41faca596bbec4c3dd9c08df0bab86410b257e4724ffc3a9ae95eb
font_01_sfnt_off000089da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89DA 18772 bytes
SHA-256: 87cd01898e0c435f6b8e3fdf3db31fb3453f40f32176463e71dafc861d9bd3f7

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