Malicious PDF — malware analysis report

Static analysis result for SHA-256 d14a897ef7a6d47d…

MALICIOUS

PDF

33.4 KB Created: 2021-06-18 15:26:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 518b005e022e3352cddf948484274dd9 SHA-1: 6ab3abc349d3b7355b60d944c4c29989b8337d0d SHA-256: d14a897ef7a6d47da0f20971984b95a5424f2569321e85c8f71f66d8f5945e1f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting free game hacks and generators for popular games like Roblox and Minecraft. The document body and heuristics indicate a lure to download or access potentially unwanted or malicious content. No scripts were extracted, but the primary attack vector is the malicious 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.co/app/431946152/free-roblox-accesories-game-hack In PDF document text
    • https://nendientu.com/public/upload/files/roblox-assassin-money-hack_GM431946152.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/minecraft-pe-apk-download-free-015-0_GM479516143.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/free-mojang-account-with-minecraft_GM479516143.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/free-roblox-ban_GM431946152.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/2021-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/free-spins-coin-master-2021-no-verification_GM406889139.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/coin-master-free-cards-link-2021-today_GM406889139.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/roblox-demon_GM431946152.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/free-outfits-roblox_GM431946152.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/is-there-a-free-version-of-minecraft_GM479516143.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/i-robux_GM431946152.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/bloxland-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
font_00_sfnt_off00002d56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D56 22080 bytes
SHA-256: 0387a892e432d41253434942a3db84f5875b7c91d2f0af297e35567abf68de3a
font_01_sfnt_off00005e4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E4C 18768 bytes
SHA-256: b0dc24526ff59c000c7ef948d6ad5a80c9e39e9c9e2bba442402ca6ef379a224