Malicious PDF — malware analysis report

Static analysis result for SHA-256 8746e7dbdca48d6c…

MALICIOUS

PDF

51.1 KB Created: 2021-06-11 11:29:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 6eceba1527cb3388629497eec8e8449f SHA-1: ed123930d2fdc272a153febb395443982bf61910 SHA-256: 8746e7dbdca48d6c292b255ab7de14978dbc57fa7af87546df0551bf01dea4bb
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a fake-CAPTCHA lure. 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 0.9724

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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.tw/app/431946152/free-minecraft-in-roblox-and-more-naval-ships-minecraft-game-hack PDF link annotation
    • http://digilib.stimlog.ac.id/repository/how-to-get-free-robux-ant_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-games-like-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-hack-muscle-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coins-master-hacks_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-promo-codes-on-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-people-girl_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coinmaster-free-spins-link_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/cheat-pc-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/www-roblox-com-robux-hack_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-roblox-glasses_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/hack-roblox-admin_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000054b3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x54B3 29324 bytes
SHA-256: 54ef59a83391f94b8df0afaa71fbb6a88a0995789e4239bb58a246204db3365c
font_01_sfnt_off0000989b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x989B 2852 bytes
SHA-256: e9630f3bb738ae3bc329a423cf069c8035d70ce2227e3557c42815f85ad3284f
font_02_sfnt_off0000a25d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA25D 19224 bytes
SHA-256: 9e1b1f06d1119655c942a9f49ead665fe4968fb6cd5c582c8ad61efa78fdd62d

Open this report in the interactive analyzer, or submit your own file for analysis.