Malicious PDF — malware analysis report

Static analysis result for SHA-256 b74ed1962d32581c…

MALICIOUS

PDF

36.3 KB Created: 2021-07-09 10:47:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6e8930b9b1e4ab1373e05ea573c210ca SHA-1: a167d1d51bdd1ab321e02cc3cfa4c71017aee9f0 SHA-256: b74ed1962d32581c1646d6a0418ac3bb8ac6a9e9760e14e01ccdfa2d1328d3f8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and free in-game currency. The primary lure appears to be a 'Coin Master Hack' redirecting to netcdn.tw. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting potentially harmful sites, likely for credential harvesting or malware delivery. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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.tw/app/406889139/coin-master-hack-activegamer-game-hack In PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/get-free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/free-robux-promo-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/elysian-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/is-overdrive-roblox-exploit-free_GM431946152.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/free-100-robux_GM431946152.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/free-cool-lit-clothes-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/how-to-hack-m-coins-mcpe-master_GM406889139.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/multiplayer-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/minecraft-bedrock-download_GM479516143.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/hack-para-restaurant-tycoon-roblox_GM431946152.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/free-robux-discord_GM431946152.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/how-to-get-free-robux-in-a-game-2021_GM431946152.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/free-robux-vermillion_GM431946152.pdfIn PDF document text
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/how-to-hack-any-account-roblox-2021-windows-10_GM431946152.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_off0000381c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x381C 22736 bytes
SHA-256: 2f90c25823461360ed73db539fe1db50de201c63f4eff72b8b449b536eb2221c
font_01_sfnt_off00006ae7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE7 18376 bytes
SHA-256: 9071112516a3c1a751db78ff2cf185d6a5c8a1d73babf85370e027775254c109

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