Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b0c033cccefe2dc…

MALICIOUS

PDF

34.8 KB Created: 2021-06-26 06:45:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 2d0a79754854f10ccc47f763d35affa4 SHA-1: d745b9162bc4c3d4f0b2674b108f953413b9dec9 SHA-256: 3b0c033cccefe2dcbe7d7084b0c0d345da61bb5c285eb7b0ecec65e7770c864c
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. It uses a password-protected-archive 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 0.9980

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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-robux-game-no-password-game-hack PDF link annotation
    • http://library.imz.or.id/repository/how-to-hack-m-coins-mcpe-master_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-online-hack_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-game-hunters-club_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/pokemon-go-free-map_GM1094591345.pdfIn PDF document text
    • http://library.imz.or.id/repository/roblox-level-7-free-exploit_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/how-to-get-free-robux-2021-codes_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/roblox-studio-free_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/6-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/how-to-hack-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-robux-and-tickets-in_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/roblox-attrition-hack_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/como-atravesar-paredes-en-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_off00002ed3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ED3 22652 bytes
SHA-256: 0773f58fd65828c104fd44c41c97728bcf57a932f83ad83d099468ba01d84b9b
font_01_sfnt_off00006194.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6194 19468 bytes
SHA-256: 6d30a5c434ae9dee38319addb9511b6d4f8f8866a08a1e6a5578ef4251fed125

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