Malicious PDF — malware analysis report

Static analysis result for SHA-256 d914241b01e73fa4…

MALICIOUS

PDF

34.6 KB Created: 2021-07-03 23:32:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 14a149258591852a958233c3ecdddc83 SHA-1: b2679c9c1869af8a691a927165c8f94bae775729 SHA-256: d914241b01e73fa41e28bca0829d1ba6eae07692222ec497ecc612c1acea9879
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically advertising free Robux and game hacks. The document body and embedded URLs strongly suggest a phishing or scam attempt designed to lure users to malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of malicious intent, likely leading to further malware download or credential harvesting.

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/free-robux-hack-no-verification-game-hack In PDF document text
    • https://www.xenonsvjetla.com/files/roblox-free-giveaway-obby_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-robux-pins-for-sale_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/coin-master-hack-apk-2021-ios_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-spins-coin-master-cheats_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/robux_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/get-free-catalog-items-on-roblox_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/roblox-hack-tool-robux-and-tickets-hack_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-hack-coin-master-using-es-filer_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://xenonsvjetla.com/files/can-you-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master-code-for-free-spins_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/minecraft-114-4-download_GM479516143.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/apps-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-get-free-faces-with-no-robux_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/roblox-item-hack_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-get-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-to-ban-people-on-roblox-hack_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
font_00_sfnt_off00002ff8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FF8 22272 bytes
SHA-256: 73b5a588432e05d31c884b1d5f0652582db8a9bedb81ee4e66184d85b556e61f
font_01_sfnt_off00006192.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6192 19244 bytes
SHA-256: 96540bd7c84d60e769713d590412c745bf113fce47b0f54684cca50d2dde6ca8

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