Malicious PDF — malware analysis report

Static analysis result for SHA-256 457c5463c416ae7b…

MALICIOUS

PDF

33.5 KB Created: 2021-07-03 12:19:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 684c4f69be8c7069e7a04b3e6a57da13 SHA-1: 00a6d29c5752210d644e55b6434d901b74a29094 SHA-256: 457c5463c416ae7b106d012849b265548cf240322876ca6dafbfed202a2212a3
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.tw/app/431946152/free-face-roblox-game-hack PDF link annotation
    • http://smkn1kutaselatan.sch.id/new/public/ckfinder/userfiles/files/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://smkn1kutaselatan.sch.id/new/public/ckfinder/userfiles/files/freerobuxhack-us_GM431946152.pdfIn PDF document text
    • http://www.smkn1kutaselatan.sch.id/new/public/ckfinder/userfiles/files/how-to-change-your-username-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://smkn1kutaselatan.sch.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • http://www.smkn1kutaselatan.sch.id/new/public/ckfinder/userfiles/files/roblox-marketplace-sell-free-shirts_GM431946152.pdfIn PDF document text
    • http://www.smkn1kutaselatan.sch.id/new/public/ckfinder/userfiles/files/how-to-get-free-obc-on-roblox_GM431946152.pdfIn PDF document text
    • http://smkn1kutaselatan.sch.id/new/public/ckfinder/userfiles/files/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://www.smkn1kutaselatan.sch.id/new/public/ckfinder/userfiles/files/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.smkn1kutaselatan.sch.id/new/public/ckfinder/userfiles/files/free-roblox-toy-codes-not-used_GM431946152.pdfIn PDF document text
    • http://smkn1kutaselatan.sch.id/new/public/ckfinder/userfiles/files/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://smkn1kutaselatan.sch.id/new/public/ckfinder/userfiles/files/minecraft-app-store-free_GM479516143.pdfIn PDF document text
    • http://www.smkn1kutaselatan.sch.id/new/public/ckfinder/userfiles/files/today-coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://smkn1kutaselatan.sch.id/new/public/ckfinder/userfiles/files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://www.smkn1kutaselatan.sch.id/new/public/ckfinder/userfiles/files/roblox-hacking-gameq_GM431946152.pdfIn PDF document text
    • http://www.smkn1kutaselatan.sch.id/new/public/ckfinder/userfiles/files/free-robux-frebruary-2021_GM431946152.pdfIn PDF document text
    • http://www.smkn1kutaselatan.sch.id/new/public/ckfinder/userfiles/files/roblox-speed-hack-booga-booga_GM431946152.pdfIn PDF document text
    • http://smkn1kutaselatan.sch.id/new/public/ckfinder/userfiles/files/get-free-roblox_GM431946152.pdfIn PDF document text
    • http://smkn1kutaselatan.sch.id/new/public/ckfinder/userfiles/files/minecraft-logo-maker-free_GM479516143.pdfIn PDF document text
    • http://www.smkn1kutaselatan.sch.id/new/public/ckfinder/userfiles/files/www-coin-master_GM406889139.pdfIn PDF document text
    • http://www.smkn1kutaselatan.sch.id/new/public/ckfinder/userfiles/files/tiktok-free-view-editor_GM835599320.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_off00002edb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EDB 21840 bytes
SHA-256: dfcc2e043b17c1783ee040576bbcc41fe7a5ba6ce575491427dac68535ef832a
font_01_sfnt_off00005f28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F28 18652 bytes
SHA-256: d924b7afd2cc958910ed798bdfc78fa153ae3edfa8036ae7e7b02c3772602b10

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