Malicious PDF — malware analysis report

Static analysis result for SHA-256 7201ec504d3c4f5c…

MALICIOUS

PDF

34.0 KB Created: 2021-07-04 10:06:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c566a4b89099b7cdfd8920f76d3f2f0c SHA-1: 0945059bc5374b58a409bdfb8727831f38759116 SHA-256: 7201ec504d3c4f5c0c95af6fc7900630cbd4f9bb5d8dac37390f1575f3005dc2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, specifically advertising free game currency or hacks. The document body and heuristics indicate a lure for users to click these links, likely leading to further malware or phishing. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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 http://netcdn.tw/app/431946152/www-rubux-game-hack In PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/static-moonactive-net-link_GM406889139.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/game-hunters-coin-master_GM406889139.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/coin-master-hack-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/how-to-hack-a-roblox-account-easy-2021_GM431946152.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/minecraft-bedrock-edition-pc-free_GM479516143.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/pubg-uc-20_GM1330123889.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/free-robux_GM431946152.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/roblox-free-body_GM431946152.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/free-items-roblox-2021-hack_GM431946152.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/free-spin-and-coin-blogspot-com_GM406889139.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/pubg-uc-2021-online_GM1330123889.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/is-minecraft-java-free_GM479516143.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/roblox-hack-peoples-account-2021_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_002_off00002e83.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E83 22496 bytes
SHA-256: 30088917fee46f1dfb75309527a1b5a37041248b57c5898ec3759cfca4abb151
font_01_sfnt_off000060a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A2 18772 bytes
SHA-256: 35d640e4f5f6b0e7d29797825f5b03f909a069630f9706be3a19f635f6f41ed8

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