Malicious PDF — malware analysis report

Static analysis result for SHA-256 c591debd528529c1…

MALICIOUS

PDF

44.2 KB Created: 2021-05-14 00:08:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 189723066b3d518847519045f6a0450c SHA-1: e1b547664c65a24ff21a786e7ef41b027abfa09a SHA-256: c591debd528529c11451c203666ff091475a784057c6384a261d344005cb8020
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users into clicking on what appear to be game-related generators or hacks. These links redirect to malicious infrastructure, specifically identified as a known malicious redirector. The presence of a visual download button further supports the deceptive nature of the document, aiming to trick users into downloading potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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/431946152/robux-generator-com-game-hack In PDF document text
    • http://radoszyna.pl/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://radoszyna.pl/images/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • http://radoszyna.pl/images/rewardrobux-com_GM431946152.pdfIn PDF document text
    • http://radoszyna.pl/images/how-to-hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://radoszyna.pl/images/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://radoszyna.pl/images/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://radoszyna.pl/images/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://radoszyna.pl/images/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://radoszyna.pl/images/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://radoszyna.pl/images/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://radoszyna.pl/images/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://radoszyna.pl/images/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://radoszyna.pl/images/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://radoszyna.pl/images/coin-master-hack-ios-no-human-verification_GM406889139.pdfIn PDF document text
    • http://radoszyna.pl/images/cheating-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://radoszyna.pl/images/hack-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://radoszyna.pl/images/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://radoszyna.pl/images/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://radoszyna.pl/images/coin-master-daily-free-coins-link-today_GM406889139.pdfIn PDF document text
    • http://radoszyna.pl/images/how-do-you-get-free-food-in-coin-master_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_003_off00004927.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4927 28080 bytes
SHA-256: 9f0e55322c9a980df4253a32f643082f1dc33ff44bd7e5c9f09b5aaf4f95a037
font_01_sfnt_off000089d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89D5 18440 bytes
SHA-256: 92b276b2fafaf0bc41eaae7a9091f29374834f042272da8153e5a9b5738015fb

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