Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e3a04a4c93301c5…

MALICIOUS

PDF

35.6 KB Created: 2021-06-28 10:56:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: f51059c9bb47ac7f43324e0c3b6898b5 SHA-1: 34c7c61eec9c8e6b87d0f4438ac500c98da957be SHA-256: 1e3a04a4c93301c556811f8d6bfdca99435bc5784e5a8989bc4f0930ddc5e6d4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game currency and hacks to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or downloads. The document's content and embedded URLs strongly suggest a phishing or scam campaign.

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.co/app/431946152/how-to-get-free-outrageous-and-robux-earrape-game-hack In PDF document text
    • http://www.carpetbcfyarn.com/uploaded_files/userfiles/files/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • http://carpetbcfyarn.com/uploaded_files/userfiles/files/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://carpetbcfyarn.com/uploaded_files/userfiles/files/how-get-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.carpetbcfyarn.com/uploaded_files/userfiles/files/coin-master-viking-quest-hack_GM406889139.pdfIn PDF document text
    • http://www.carpetbcfyarn.com/uploaded_files/userfiles/files/master-hack-coin_GM406889139.pdfIn PDF document text
    • http://carpetbcfyarn.com/uploaded_files/userfiles/files/how-to-get-free-mods-in-minecraft_GM479516143.pdfIn PDF document text
    • http://www.carpetbcfyarn.com/uploaded_files/userfiles/files/paginas-web-para-conseguir-robux-gratis-sin-hacks-2021_GM431946152.pdfIn PDF document text
    • http://carpetbcfyarn.com/uploaded_files/userfiles/files/rbxrocks-free-robux_GM431946152.pdfIn PDF document text
    • http://www.carpetbcfyarn.com/uploaded_files/userfiles/files/roblox-mega-fun-obby-cheats_GM431946152.pdfIn PDF document text
    • http://carpetbcfyarn.com/uploaded_files/userfiles/files/coin-master-free-spins-hacktman_GM406889139.pdfIn PDF document text
    • http://carpetbcfyarn.com/uploaded_files/userfiles/files/how-to-hack-games-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://carpetbcfyarn.com/uploaded_files/userfiles/files/roblox-robux-hack-mod_GM431946152.pdfIn PDF document text
    • http://carpetbcfyarn.com/uploaded_files/userfiles/files/free-spin-coin-master-hacktoman_GM406889139.pdfIn PDF document text
    • http://carpetbcfyarn.com/uploaded_files/userfiles/files/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://carpetbcfyarn.com/uploaded_files/userfiles/files/how-to-get-free-coins-on-meep-city-roblox_GM431946152.pdfIn PDF document text
    • http://carpetbcfyarn.com/uploaded_files/userfiles/files/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • http://carpetbcfyarn.com/uploaded_files/userfiles/files/minecraft-free-version-pc_GM479516143.pdfIn PDF document text
    • http://carpetbcfyarn.com/uploaded_files/userfiles/files/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://www.carpetbcfyarn.com/uploaded_files/userfiles/files/coin-master-hack-android-root_GM406889139.pdfIn PDF document text
    • http://www.carpetbcfyarn.com/uploaded_files/userfiles/files/static-moonactive-net_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_off00003298.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3298 22648 bytes
SHA-256: c9bdfc42c5bc5d4235235b86789984dd9bddbcc60409908150891dc78616568a
font_01_sfnt_off00006535.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6535 19336 bytes
SHA-256: c8810635cc9859667f266aee26ca2222798f4d395f8542f2a9fc3888669c738f

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