Malicious PDF — malware analysis report

Static analysis result for SHA-256 d90a951f94f45300…

MALICIOUS

PDF

45.7 KB Created: 2021-05-19 07:12:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 50da3f83b11c1c46f6f1f5925fb68885 SHA-1: e54588bd5127c47c9ba154b60faf9fe04dff4bbc SHA-256: d90a951f94f45300ff5e158246b74ce86e85ff0b492f1f15a7b0b6c388d1db03
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and infrastructure, disguised as game hacks or generators. The primary link directs users to 'coin-master-hack-fast-org-game-hack', which is likely intended to lead to a further malicious download or exploit. No scripts were extracted, but the document's structure and embedded URLs strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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-fast-org-game-hack In PDF document text
    • https://schneider-und-berger.de/images/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • https://schneider-und-berger.de/images/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • https://schneider-und-berger.de/images/freespinandcoin-blogspot_GM406889139.pdfIn PDF document text
    • https://schneider-und-berger.de/images/coin-master-hack-mod-game-download_GM406889139.pdfIn PDF document text
    • https://schneider-und-berger.de/images/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://schneider-und-berger.de/images/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://schneider-und-berger.de/images/complete-offers-for-robux_GM431946152.pdfIn PDF document text
    • https://schneider-und-berger.de/images/worst-client_GM479516143.pdfIn PDF document text
    • https://schneider-und-berger.de/images/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://schneider-und-berger.de/images/free-robux-codes_GM431946152.pdfIn PDF document text
    • https://schneider-und-berger.de/images/coin-master-cheat-engine-hack_GM406889139.pdfIn PDF document text
    • https://schneider-und-berger.de/images/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • https://schneider-und-berger.de/images/gaming-dunia-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://schneider-und-berger.de/images/free-spin-coin-master-new-link_GM406889139.pdfIn PDF document text
    • https://schneider-und-berger.de/images/how-to-change-your-username-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • https://schneider-und-berger.de/images/coinmaster-spin-ml-free_GM406889139.pdfIn PDF document text
    • https://schneider-und-berger.de/images/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://schneider-und-berger.de/images/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://schneider-und-berger.de/images/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://schneider-und-berger.de/images/robux-cheat_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b03.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B03 25120 bytes
SHA-256: 2bf55a7050a8d2531e590ec998cf70a695576f1bf096c93808f1fe5f3f2251f4
font_01_sfnt_off00008495.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8495 3380 bytes
SHA-256: 1dd933c112880b232546f3aab6a17784a8f412d39fd551cc6eb31c5a04c3ce57
font_02_sfnt_off0000907e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x907E 18168 bytes
SHA-256: 7a2864cc1964f65bb55278374f52d37ed5284a558190aa300124a537575e7f7b

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