Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed73267552e9f4a3…

MALICIOUS

PDF

35.7 KB Created: 2021-07-07 13:08:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 1aea58ac98e18049c397b30e47ab371d SHA-1: bfcdb428ba96ce2246a55d2347a2fd798406f68c SHA-256: ed73267552e9f4a35baa797ee35b37c23ec9f0e0e20a5cd3712308d7d94bc4a9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links to redirector infrastructure, masquerading as "hacks" for popular games like Coin Master and Roblox. The primary lure, "Coin Master Hack Without Verification Code", directs users to a known malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest an attempt to lead the user to a malicious site, likely for credential harvesting or further malware delivery.

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/406889139/coin-master-hack-without-verification-code-game-hack In PDF document text
    • https://www.xenonsvjetla.com/files/free-minecraft-java-edition_GM479516143.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-hack-roblox-for-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/133-free-robux_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/coin-master-mod-version-free-download-ios_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/coin-master-hack-unlimited-spins-and-coins-cheats_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/daily-coin-master-link_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-candy-script-roblox_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-robux-form-hectic-plays_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/2021-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-to-make-hats-free-roblox_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-roblox-clothes-for-your-avatar_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-get-free-robux-from-cash-for-apps_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/pop-slots-free-vegas-casino-slots-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://xenonsvjetla.com/files/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/www-claim-gg-to-earn-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_002_off000032ed.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32ED 23224 bytes
SHA-256: fa186a37162126406e74136c8fc8cafa3c1fed152e4348434aefeeb9b22a6de1
font_01_sfnt_off00006769.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6769 18816 bytes
SHA-256: a9e0a618903bb392e01413f9b152c22796f511f28b171904dea730d40abc975b

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