Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f5f2795c67d1cca…

MALICIOUS

PDF

35.3 KB Created: 2021-06-24 18:29:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: dcc2239ca40a3cde98d4f3991f7eec59 SHA-1: 8066e18d617fb8b35dee122da776a34f1bb59bd2 SHA-256: 4f5f2795c67d1cca3cfaa3b7459ff92901644b3de37c3822352072d8d8d8c76e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'free Roblox accounts' and redirects to a suspicious URL. The ML classifier flagged this PDF as malicious with high confidence. While no scripts were extracted, the embedded URL is the primary indicator of malicious intent, likely leading to a phishing or malware download site.

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-roblox-acc-game-hack PDF link annotation
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-gift-robux-on-mobile_GM431946152.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/free-tiktok-coins_GM835599320.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/free-gear-roblox-game_GM431946152.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/synapse-free-download-roblox_GM431946152.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/free-robux-download_GM431946152.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/minecraft-free-download-apk-softonic_GM479516143.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-setup-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/free-coins--spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-hack-online-link_GM406889139.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/wurst-hacks_GM479516143.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

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_off00003469.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3469 22288 bytes
SHA-256: 9bbd7e2ed6a28f45d30d287c166fd206b1118512fd8db36a11afe8832e6bfc4d
font_01_sfnt_off00006611.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6611 18652 bytes
SHA-256: 897dbc28d09cb323d8d959c0643642adc43f046846d73b8db675e87b41f7de50

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