Malicious PDF — malware analysis report

Static analysis result for SHA-256 892fcd56e3e96f43…

MALICIOUS

PDF

44.4 KB Created: 2021-05-12 07:02:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7962e700cd022c4e156266114d34799d SHA-1: ea929fba6deeb27619507045748cc271675c28e9 SHA-256: 892fcd56e3e96f43d03f0f4774a85f95bc39892a42de43fffd8e9a09aba8144f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites that are flagged as malicious redirectors, specifically promoting 'free generator' and 'game hack' lures. The document body, though partially corrupted, contains references to these lures and embedded URLs. The presence of multiple malicious redirector links strongly indicates a phishing or scam attempt designed to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/blox-pink-robux-free-game-hack In PDF document text
    • https://cormixhydro.ru/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://cormixhydro.ru/images/coin-master-free-download-app_GM406889139.pdfIn PDF document text
    • https://cormixhydro.ru/images/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • https://cormixhydro.ru/images/free-spins-and-coins-from-coin-master-game_GM406889139.pdfIn PDF document text
    • https://cormixhydro.ru/images/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • https://cormixhydro.ru/images/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • https://cormixhydro.ru/images/coin-master-free-spins-2021-hack_GM406889139.pdfIn PDF document text
    • https://cormixhydro.ru/images/free-minecraft-server_GM479516143.pdfIn PDF document text
    • https://cormixhydro.ru/images/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • https://cormixhydro.ru/images/get-free-coin-master_GM406889139.pdfIn PDF document text
    • https://cormixhydro.ru/images/minecraft-java-edition-key-free_GM479516143.pdfIn PDF document text
    • https://cormixhydro.ru/images/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://cormixhydro.ru/images/roblox-microsoft-rewards_GM431946152.pdfIn PDF document text
    • https://cormixhydro.ru/images/free-spins-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • https://cormixhydro.ru/images/free-coin-spin-daily-link-coin-master_GM406889139.pdfIn PDF document text
    • https://cormixhydro.ru/images/all-free-items-in-roblox_GM431946152.pdfIn PDF document text
    • https://cormixhydro.ru/images/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • https://cormixhydro.ru/images/free-minecraft-education-edition_GM479516143.pdfIn PDF document text
    • https://cormixhydro.ru/images/coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • https://cormixhydro.ru/images/play-coin-master_GM406889139.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
font_00_sfnt_off00004998.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4998 29256 bytes
SHA-256: 5f5f3426b8fd3f47c7c565e4fb01217722e9c10b9a0fc8de78eb0d3ca40df9dc
font_01_sfnt_off00008acd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ACD 18532 bytes
SHA-256: 83476c1cdc4965e32c1b031adf165cbdabd52b50c1595b7bdd37ea4d9a1aed4b

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