Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d5512ee19505aca…

MALICIOUS

PDF

42.3 KB Created: 2021-05-14 02:27:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ff4d0d8a472970b6646336059f0a5b24 SHA-1: c82d58b17fef9db636680d77af14faa5db53223e SHA-256: 6d5512ee19505acaf682916e5bd1110e6d1bf84fdb1c1b2dd2ef9a5adc952e08
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to a known malicious infrastructure, masquerading as a "game hack" or "generator". The document body and heuristics indicate a lure designed to trick users into clicking these links, likely leading to further malware downloads or phishing attempts. While no scripts were explicitly extracted, the nature of PDF redirects often involves JavaScript execution to facilitate the redirection.

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/hack-version-of-coin-master-apk-download-game-hack In PDF document text
    • http://centuriatus.com/images/give-me-robux-now_GM431946152.pdfIn PDF document text
    • http://centuriatus.com/images/free-bedrock-minecraft_GM479516143.pdfIn PDF document text
    • http://centuriatus.com/images/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://centuriatus.com/images/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://centuriatus.com/images/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://centuriatus.com/images/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://centuriatus.com/images/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://centuriatus.com/images/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://centuriatus.com/images/free-coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • http://centuriatus.com/images/free-robux-download_GM431946152.pdfIn PDF document text
    • http://centuriatus.com/images/coin-blogspot_GM406889139.pdfIn PDF document text
    • http://centuriatus.com/images/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • http://centuriatus.com/images/free-roblox-website_GM431946152.pdfIn PDF document text
    • http://centuriatus.com/images/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • http://centuriatus.com/images/coin-master-hack-here_GM406889139.pdfIn PDF document text
    • http://centuriatus.com/images/roblox-catalog-free_GM431946152.pdfIn PDF document text
    • http://centuriatus.com/images/clean-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://centuriatus.com/images/coin-master-spin-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://centuriatus.com/images/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://centuriatus.com/images/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004761.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4761 25172 bytes
SHA-256: 6bf73b09791153963a91b54ae4fdb457c3ac7e8fe128cf3600a7c012170e164c
font_01_sfnt_off000081b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81B2 18608 bytes
SHA-256: 5b95fa97962658a3e629e8357bf81639977ca58617958822feb21fc523d607ab

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