Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d4de7df701ab90d…

MALICIOUS

PDF

33.8 KB Created: 2021-07-01 16:52:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7b6ef45084840e7a48c71b3949b45b76 SHA-1: 56718801782977cba2db6c9b1f3cd77b68bdd757 SHA-256: 3d4de7df701ab90d1ab84e979deed5e41bc2851ccc425a5061f24ec571d3b03c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, specifically advertising free game currency generators and hacks. The primary lure URL is http://netcdn.co/app/431946152/how-get-free-robux-without-verification-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a phishing or scam attempt, likely leveraging embedded JavaScript for redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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-get-free-robux-without-verification-game-hack In PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/claimrobux-net_GM431946152.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/executor-for-roblox-free_GM431946152.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/cmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/roblox-jailbreak-cheat-engine-noclip_GM431946152.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-ios-gods-hack_GM406889139.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/how-to-get-roblox-back-if-i-was-hacked-2021_GM431946152.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/minecraft-nintendo-switch-digital-code-free_GM479516143.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/gunslinger-hack-in-roblox_GM431946152.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/pubg-uc-buy_GM1330123889.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/roblox-money-cheats-2021_GM431946152.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/hack-menu-exploit-script-roblox_GM431946152.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/how-to-hack-coin-master-spin-in-hindi_GM406889139.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/is-roblox-free-on-pc_GM431946152.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spin-link-list_GM406889139.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
stream_001_off00002d94.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2D94 21892 bytes
SHA-256: 900e3687e8627da96a2372c6855ee3e6d0251dc80e33f2fb4c77b774fcf0449e
font_01_sfnt_off00005dd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DD0 19604 bytes
SHA-256: f2b8eabc234ffaa490c8cfe4421b5c0f75ac661cdf21c4af21535d19ca2cee20

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