Malicious PDF — malware analysis report

Static analysis result for SHA-256 221ca1c503f82330…

MALICIOUS

PDF

43.2 KB Created: 2021-05-13 05:07:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: eb26a48354a71fad23b4210410b47ea0 SHA-1: c516d1ae3c681935e697d157e8ac04d25939e73e SHA-256: 221ca1c503f823303f12896774ff2d43fabcf31d425a3af905726653d3cc03ab
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, masquerading as game hacks and free generator lures. The primary link directs users to 'https://netcdn.xyz/app/479516143/how-to-hack-a-minecraft-server-and-make-yourself-op-game-hack', which is flagged as malicious. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a malicious redirector workflow designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/479516143/how-to-hack-a-minecraft-server-and-make-yourself-op-game-hack In PDF document text
    • http://bunadsmaria.com/images/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://bunadsmaria.com/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://bunadsmaria.com/images/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://bunadsmaria.com/images/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://bunadsmaria.com/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://bunadsmaria.com/images/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://bunadsmaria.com/images/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://bunadsmaria.com/images/freespinandcoinblogspot-com-2021-11-coinmasterfreespins_GM406889139.pdfIn PDF document text
    • http://bunadsmaria.com/images/como-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://bunadsmaria.com/images/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://bunadsmaria.com/images/mcpe-master-hack-unlimited-coins-download_GM406889139.pdfIn PDF document text
    • http://bunadsmaria.com/images/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://bunadsmaria.com/images/earn-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://bunadsmaria.com/images/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://bunadsmaria.com/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://bunadsmaria.com/images/how-to-hack-coin-master-cheat-engine_GM406889139.pdfIn PDF document text
    • http://bunadsmaria.com/images/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://bunadsmaria.com/images/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • http://bunadsmaria.com/images/coin-master-free-codes_GM406889139.pdfIn PDF document text
    • http://bunadsmaria.com/images/free-spin-gratis-coin-master_GM406889139.pdfIn PDF document text
    • https://code.giftcards.comIn 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_off00004bcf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BCF 25296 bytes
SHA-256: 6b531a367f4097c59777b7c0d91d98bedd9c4012b1172ee5eab8e429a10f17a4
font_01_sfnt_off000084ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84AC 18884 bytes
SHA-256: c6c75348c8512da505ae943a266b7446b2e14ebdee3fe9748eb8d749779a3ee4

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