Malicious PDF — malware analysis report

Static analysis result for SHA-256 462655d9b4206813…

MALICIOUS

PDF

35.4 KB Created: 2021-07-01 07:52:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 4b869c7cb1d61f1895462fa8fa5ebfb9 SHA-1: 0f6cd1816c54f600006655b263da7fae89d498ab SHA-256: 462655d9b420681319f6ce955a657bc13a9044bcf943d649d78a9ee79ec25ab1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector pointing to 'http://netcdn.co/app/431946152/how-to-make-free-admin-in-roblox-game-hack'. This lure, combined with a visual download button heuristic, suggests a phishing or scam attempt to trick users into visiting potentially harmful sites. No scripts were extracted, limiting further analysis of the payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/how-to-make-free-admin-in-roblox-game-hack In PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/free-minecraft-texture-packs-java_GM479516143.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/links-to-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/how-do-you-earn-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/babe-free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/game-give-free-robux_GM431946152.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/free-robux-app-real_GM431946152.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/free-coins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/minecraft-kill-aura_GM479516143.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/gold-cards-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/robux-come_GM431946152.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/robux-free-co_GM431946152.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/mcpe-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/toolbox-apk_GM479516143.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/how-to-get-free-stuff-on-roblox-gear_GM431946152.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/coin-master-mod-version-free-download_GM406889139.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/coin-master-hack-apk-with-fb-login_GM406889139.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/minecraft-for-free-games_GM479516143.pdfIn PDF document text
    • http://smagripadps.sch.id/new/public/ckfinder/userfiles/files/coin-master-online-hack-download_GM406889139.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_off0000317d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x317D 22504 bytes
SHA-256: 3e7ce6e3cc6f310a9a0aaaf3915fff7b2e3f80272091a107bfbd5461fe06f0b4
font_01_sfnt_off000063a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63A8 19736 bytes
SHA-256: 1fa3473e7cd9bb8e0f4789652f45a6f4cd8327db99568035ca0eb79c0a73df5b

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