Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc5940c56001049c…

MALICIOUS

PDF

36.8 KB Created: 2021-06-20 10:51:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 9719ea2f73ef21ac167babec83b9d170 SHA-1: a994ecd4c7ee366d37c4e8e9b87a043a02821417 SHA-256: bc5940c56001049cebb84d4bff20fedec8d17a4a4b4a7202feef806b9f5ecf9e
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/free-instant-catalog-item-roblox-2021-game-hack PDF link annotation
    • http://daskrimti-jabar.web.id/library/repository/cool-free-roblox-avatars_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/how-to-hack-roblox-tycoon-money_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-free-items-hack-pastebin_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-tix-generator_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/https-iosgodscom-topic-20214coinmasterhack_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-hack-ingame_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/omplete-surveys-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-sk8r-game-kicked-me-for-no-cheating_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-free-pants_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/bux-free-robux_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-hack-download-2021-pc_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/kupcake-roblox-hack_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_off00003772.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3772 22720 bytes
SHA-256: e1ab2fecc20f8c48c7c84f3e4cf5cc6aba8ac5eaf84b804e00efe1a0b9420bb5
font_01_sfnt_off00006a01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A01 19416 bytes
SHA-256: 986ac398df79eb645191fdb58200a8cb601847e1b722c8b21be036951a3787ad

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