Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e2b080d7b650001…

MALICIOUS

PDF

34.4 KB Created: 2021-07-08 05:53:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: d456d1508dbb8a603301f3184e660ba2 SHA-1: 33d3b6d1e92d74f79eb62d90780429bd45897dc5 SHA-256: 4e2b080d7b6500018ac46a476be797ffa647cd3d01a4980a69448ad6ff436fd4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on what appear to be free game currency generators or hacks. The primary link, http://netcdn.tw/app/431946152/ways-to-get-free-robux-game-hack, is identified as a malicious redirector. The document's content and embedded URLs strongly suggest a phishing or scam attempt, likely leading to further malware downloads or credential harvesting. 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/ways-to-get-free-robux-game-hack In PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/coin-master-free-online_GM406889139.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/best-roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/cheat-engine-codes-roblox_GM431946152.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/legitimate-coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/athena-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/free-tiktok-likes-app_GM835599320.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/free-redvalk-code-roblox-news_GM431946152.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/coin-master-root-hack_GM406889139.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/roblox-studio-are-datasotres-free_GM431946152.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/free-robux-2021-app_GM431946152.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/coin-master-free-gold-cards-link_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_off00002f60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F60 22200 bytes
SHA-256: f9bdac78efe1e0f58a25c78ff3f1a5eab24e9b9539f0dfc8c05f1a33eb12793f
font_01_sfnt_off000060c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60C4 19196 bytes
SHA-256: 96331d0996f68a985869c858ea36cc40aa482b0fedd10a8c06058efa80dfe966

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