Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eb1e71961074876…

MALICIOUS

PDF

35.4 KB Created: 2021-06-21 00:42:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: bcfe8888bca29e2b57f63ac1b5d729bc SHA-1: 1c366f3cf74704ce124051c7046b65eafe6514eb SHA-256: 9eb1e719610748766a93f28f1d784edf2732ae01e14c0534b38a2f3094e012c1
82 Risk Score

Malware Insights

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

The PDF file contains a high-severity heuristic firing for a game hack lure, directing users to a suspicious URL. The document body also contains the same URL, reinforcing the lure. This suggests the document is designed to trick users into visiting a site that likely hosts malware or phishing content.

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/roblox-help-free-robux-game-hack PDF link annotation
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/tiktok-free-hosting_GM835599320.pdfIn PDF document text
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/how-to-get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/coin-master-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/minecraft-for-free-apk_GM479516143.pdfIn PDF document text
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/tiktok-free-online-games_GM835599320.pdfIn PDF document text
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/androeed-ru-minecraft_GM479516143.pdfIn PDF document text
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/coin-master-32-android-mod-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/pubg-uc-2021_GM1330123889.pdfIn PDF document text
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/free-coin-master-coins-2021_GM406889139.pdfIn PDF document text
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32A6 22676 bytes
SHA-256: 279924f91d6a3254116a4e5d58d41fe8b748fcb1c435a057552edac5202722fa
font_01_sfnt_off0000658b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x658B 18968 bytes
SHA-256: e6d3133e218776b7d87035f377c26f4245cc7a54287827524eb781a63c565006

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