Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfaeb2396bcf1212…

MALICIOUS

PDF

34.3 KB Created: 2021-07-04 09:24:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3448b1f6dadfc16d9aefe6d8f3a8787a SHA-1: d82362603e21af715321987f499bc9a423d5d6ce SHA-256: bfaeb2396bcf1212c9753aea41657e803f338e9e9b803bafb5f90be8a2671722
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/roblox-com-hack-game-hack PDF link annotation
    • http://chem.ipb.ac.id/kim/repository/martian-lettuce-coin-master-free_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/is-the-robux-hack-safe-2021_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/get-more-robux_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/how-do-i-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/apps-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/coinmaster-free-spins-link_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/robux-hack-no-download-games_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/roblox-anti-cheat-bypass-noclip-pastebin_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/roblox-free-play-deathrun_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/coin-master-village-3_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/free-robux-codes-generator-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/roblox-generator-com_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.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_off00002f01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F01 22484 bytes
SHA-256: e170e408c49c1107b7c3bb6d427b27d4b3e9b81bd3db6e9d7ec58ec890d8050c
font_01_sfnt_off00006151.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6151 18916 bytes
SHA-256: 9cb05533f98f4e2367072af5f88feb3ab929c06b5a26e3a671612f35ad90b071

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