Malicious PDF — malware analysis report

Static analysis result for SHA-256 e36cb730f650a862…

MALICIOUS

PDF

44.1 KB Created: 2021-06-11 01:03:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a2b8497bf813f234c49e1e2954c763b0 SHA-1: 90700cb46cb81b781717251414056d4fc5dbb848 SHA-256: e36cb730f650a8625cfd57afc703022b43103ca5bc84799a6fbc029fce23fa09
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains a large number of external links, many of which are disguised as PDF files related to game hacks and free currency. The document body and extracted URLs suggest a lure for users seeking in-game currency or cheats, likely leading to malicious websites. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 https://netcdn.tw/app/431946152/how-to-get-free-robux-on-roblox-easy-2021-game-hack
    • http://optiquedelavaunage.com/images/robux-free-gift-card-org-hack_GM431946152.pdf
    • http://optiquedelavaunage.com/images/free-robux-no-human-verification-or-survey_GM431946152.pdf
    • http://optiquedelavaunage.com/images/claim-free-robux-button_GM431946152.pdf
    • http://optiquedelavaunage.com/images/free-coin-master-spin-app_GM406889139.pdf
    • http://optiquedelavaunage.com/images/coin-master-hack-version-2021-download_GM406889139.pdf
    • http://optiquedelavaunage.com/images/free-spins-on-coin-master-iphone_GM406889139.pdf
    • http://optiquedelavaunage.com/images/coin-master-free-spin-no-offers_GM406889139.pdf
    • http://optiquedelavaunage.com/images/teleport-script-roblox-hack_GM431946152.pdf
    • http://optiquedelavaunage.com/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdf
    • http://optiquedelavaunage.com/images/get-free-robux-gg_GM431946152.pdf
    • http://optiquedelavaunage.com/images/free-robux-websites-that-actually-work-2021_GM431946152.pdf
    • http://optiquedelavaunage.com/images/how-to-get-free-robux-no-scam_GM431946152.pdf
    • http://optiquedelavaunage.com/images/free-roblox-pin-codes_GM431946152.pdf
    • http://optiquedelavaunage.com/images/free-roblox-hack_GM431946152.pdf
    • http://optiquedelavaunage.com/images/free-spins-coin-master-site-wwwquoracom_GM406889139.pdf
    • http://optiquedelavaunage.com/images/free-robux-generator-no-human-verification_GM431946152.pdf
    • http://optiquedelavaunage.com/images/free-robux-only-username-no-human-verification_GM431946152.pdf
    • http://optiquedelavaunage.com/images/minecraft-building-hacks_GM479516143.pdf
    • http://optiquedelavaunage.com/images/free-spins-coin-master-links_GM406889139.pdf
    • http://optiquedelavaunage.com/images/free-tiktok-views-trial_GM835599320.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004eb3.bin
31a49eef1ea8f238385878dc6d9860b053189bed6d65ce1490da2b589343e33d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4EB3 24568 bytes
font_01_sfnt_off000086bc.bin
599e3f7ac023e23b355d645cf7e6f9ee8ddb93d85cc5d322f726d437ec0d8f9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86BC 19164 bytes

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