Malicious PDF — malware analysis report

Static analysis result for SHA-256 578f40b48a4ef19b…

MALICIOUS

PDF

34.8 KB Created: 2021-06-18 20:12:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 57c2bf924fdd7b5b708c8f8e1a4cef0f SHA-1: ab3744d0dc83097a7e83b8eb39783538a909d270 SHA-256: 578f40b48a4ef19b99aed858ab2c7e990eccf78a162aa9305f6b84c157c836db
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.co/app/431946152/advia-roblox-free-game-hack PDF link annotation
    • https://www.taline.hr/files/roblox-army-robux_GM431946152.pdfIn PDF document text
    • https://www.taline.hr/files/free-robux-no-password_GM431946152.pdfIn PDF document text
    • https://www.taline.hr/files/free-robux-scam_GM431946152.pdfIn PDF document text
    • https://www.taline.hr/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.taline.hr/files/robux-prices_GM431946152.pdfIn PDF document text
    • https://www.taline.hr/files/how-do-you-earn-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.taline.hr/files/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://www.taline.hr/files/coin-master-hack-iosgods_GM406889139.pdfIn PDF document text
    • https://www.taline.hr/files/can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.taline.hr/files/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.taline.hr/files/free-robux-co_GM431946152.pdfIn PDF document text
    • https://www.taline.hr/files/static-moonactive-net-link_GM406889139.pdfIn PDF document text
    • https://www.taline.hr/files/free-robux-youtube_GM431946152.pdfIn PDF document text
    • https://www.taline.hr/files/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • https://www.taline.hr/files/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • https://www.taline.hr/files/hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • https://www.taline.hr/files/pubg-uc-official-app_GM1330123889.pdfIn PDF document text
    • https://www.taline.hr/files/roblox-phantom-forces-cheat-table_GM431946152.pdfIn PDF document text
    • https://www.taline.hr/files/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.taline.hr/files/wahoogaming-co-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_off000030f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30F0 22500 bytes
SHA-256: cea668fd3502ab32a6350dd2ce6ae3c85ecd8314a99624a5dba6610109240b59
font_01_sfnt_off000062e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E7 19056 bytes
SHA-256: 0d23ccc3ea3e2c4e46b5cfaba14fcee45faa620b597030e9ec8399ac4dcf6e52