Malicious PDF — malware analysis report

Static analysis result for SHA-256 e66f662856d86bfd…

MALICIOUS

PDF

46.4 KB Created: 2021-05-13 15:04:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7391cfa1cf2257a8fa5a207a3373b3e4 SHA-1: 685588b456266f015de83b9e8572a71ac210f860 SHA-256: e66f662856d86bfd77ea57996b6cc18e2b66ab611d29d0bdad8eb7738a27a569
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free spins'. The ML classifier also flagged this PDF as malicious. The primary attack pattern involves luring users to click these links, likely leading to further malware downloads or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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 https://netcdn.xyz/app/406889139/coin-master-hack-xyz-game-hack In PDF document text
    • http://origamiperu.com/images/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://origamiperu.com/images/roblox-old-avatar_GM431946152.pdfIn PDF document text
    • http://origamiperu.com/images/coin-master-35-16-hack-apk_GM406889139.pdfIn PDF document text
    • http://origamiperu.com/images/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://origamiperu.com/images/coin-master-hack-app-link_GM406889139.pdfIn PDF document text
    • http://origamiperu.com/images/coin-master-spin-hack-link_GM406889139.pdfIn PDF document text
    • http://origamiperu.com/images/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://origamiperu.com/images/minecraft-sign-up-free_GM479516143.pdfIn PDF document text
    • http://origamiperu.com/images/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • http://origamiperu.com/images/coin-master-free-spins-link-whatsapp-group_GM406889139.pdfIn PDF document text
    • http://origamiperu.com/images/coin-master-free-chest-link_GM406889139.pdfIn PDF document text
    • http://origamiperu.com/images/free-spins-coin-master-2021-today_GM406889139.pdfIn PDF document text
    • http://origamiperu.com/images/how-do-you-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://origamiperu.com/images/robux-gainer_GM431946152.pdfIn PDF document text
    • http://origamiperu.com/images/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://origamiperu.com/images/coin-master-free-coins-cheat_GM406889139.pdfIn PDF document text
    • http://origamiperu.com/images/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://origamiperu.com/images/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://origamiperu.com/images/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://origamiperu.com/images/coin-master-free-daily-spins_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ca5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CA5 25988 bytes
SHA-256: 03dccdf8e324b8a549a3c16a0b1c460ec6d61c7876c30a8b859515dd3c60b267
font_01_sfnt_off0000884e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x884E 18204 bytes
SHA-256: eb378c11d4c3edf43fd4a317fe896922564aeaa66921672c4d59ab66e1a3bbf9
font_02_sfnt_off0000aa46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA46 3264 bytes
SHA-256: e32c06502c11b52acb5e814091c5fdbffd1e2a904ac7a9cfb8b5b180bd139088

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