Malicious PDF — malware analysis report

Static analysis result for SHA-256 90cb84755a3bef9f…

MALICIOUS

PDF

42.4 KB Created: 2021-05-18 00:33:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d2e14dfb42ec5e17d6446cc461dbe70a SHA-1: f2dd7b7d1b7daad2ace92ffbac4df688db9b8b04 SHA-256: 90cb84755a3bef9f9034828101bbdf67a63749d1942d1dee1717338365895651
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and lures users with promises of game hacks and free currency. The embedded URLs, such as 'https://netcdn.xyz/app/406889139/coin-master-hacks-for-gold-cards-game-hack', are designed to lead users to potentially harmful content. The document body and heuristics strongly indicate a phishing or scam attempt leveraging popular game themes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-hacks-for-gold-cards-game-hack In PDF document text
    • http://fmbompastor.com.br/images/free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/minecraft-cheat-client_GM479516143.pdfIn PDF document text
    • http://fmbompastor.com.br/images/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/robux-free-com_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/how-to-get-a-free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://fmbompastor.com.br/images/new-free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/coin-master-free-fire_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/hack-coin-master-online_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/coin-master-free-gift-link-2021_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/free-robux-real_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/robux-claimer_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/hack-coin-master-ios-download_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/how-to-get-minecraft-pe-for-free_GM479516143.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_003_off00004a25.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A25 25300 bytes
SHA-256: a67f5ad76989d4b3b11000dd29ec8d008c0a35d73613a86ed6fd6877dffec65d
font_01_sfnt_off000083cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83CF 18128 bytes
SHA-256: 92f67a8595df518c209bc74471438c0bfca827f3a9f1725b2b2b65898affb2c4

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