Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e751d4fc53218ec…

MALICIOUS

PDF

42.0 KB Created: 2021-05-11 15:00:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 81c88f953fde43783a59d33933c3d3fb SHA-1: 7099f3826ca3607f20204b06b94ef23fac6b1faa SHA-256: 2e751d4fc53218ec9d950fc00466ba5b5a17333c022e61f2ba2b2796d4ed55f1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded URLs and a visual download button lure, directing users to external sites that offer game hacks. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent. The primary goal appears to be tricking users into downloading further malware by posing as a cheat or hack for popular games.

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/free-coin-master-s-game-hack In PDF document text
    • http://dream-house.de/images/coin-master-free-spins-and-coins-for-today_GM406889139.pdfIn PDF document text
    • http://dream-house.de/images/descargar-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://dream-house.de/images/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://dream-house.de/images/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://dream-house.de/images/coin-master-free-spins-link-today-ios_GM406889139.pdfIn PDF document text
    • http://dream-house.de/images/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://dream-house.de/images/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://dream-house.de/images/minecraft-menu_GM479516143.pdfIn PDF document text
    • http://dream-house.de/images/free-spins-and-coins-com_GM406889139.pdfIn PDF document text
    • http://dream-house.de/images/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://dream-house.de/images/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://dream-house.de/images/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://dream-house.de/images/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
    • http://dream-house.de/images/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • http://dream-house.de/images/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://dream-house.de/images/roblox-top_GM431946152.pdfIn PDF document text
    • http://dream-house.de/images/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://dream-house.de/images/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://dream-house.de/images/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • http://dream-house.de/images/real-robux-generator_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_off00004848.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4848 25532 bytes
SHA-256: c0f37bd060d76b4d0270d07954406e581cf33164608f4b425bbfb45eb06b1de0
font_01_sfnt_off00008371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8371 17712 bytes
SHA-256: 83e6368531281f79bc8a247dbff91bcc300722aca528e8188b4403c4bc3ddf9e

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