Malicious PDF — malware analysis report

Static analysis result for SHA-256 80128841d47d12d1…

MALICIOUS

PDF

34.5 KB Created: 2021-07-06 11:26:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 352d26e1913042d4989a1c741bed450d SHA-1: 0e6116806c2ac974bffe339a20eb842ee672369f SHA-256: 80128841d47d12d14c8934c8ae9dee984b51460e0c9dce4c54f94de35d221c2c
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, many of which are SEO-optimized and point to game-related cheats and hacks. The ML classifier strongly indicated maliciousness, and the presence of external URIs suggests a link farm designed to redirect users to potentially malicious content or phishing sites. No scripts were extracted, but the overall structure and content point to a lure for downloading unwanted software or visiting malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-free-spin-redeem-code-game-hack
    • http://digilibfisip.unla.ac.id/repository/free-roblox-catalog-buyer-bot_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/free-promo-code-roblox-twitter_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/free-spins-coin-master-2021-app_GM406889139.pdf
    • http://digilibfisip.unla.ac.id/repository/www-cheatsk-com-coin-master-hack_GM406889139.pdf
    • http://digilibfisip.unla.ac.id/repository/ultimate-free-spins-coin-master_GM406889139.pdf
    • http://digilibfisip.unla.ac.id/repository/free-roblox-skins-editor_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/roblox-free-level-7-script-executor_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/lego-hacks-roblox_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/best-all-round-roblox-gui-script-hack_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/roblox-btools-hack-november-2021_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/free-minecraft-hosting-24-7_GM479516143.pdf
    • http://digilibfisip.unla.ac.id/repository/inject-hack-roblox-buides-club_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/roblox-hack-no-verification-no-survey_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/how-to-get-free-robux-without-email_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/coin-master-hack-apk-35-13_GM406889139.pdf
    • http://digilibfisip.unla.ac.id/repository/how-to-get-free-coins-on-meep-city-roblox_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/roblox-cheat-codes-for-iphone_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/gcomment-hacker-strucid-roblox_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/roblox-800-robux-free-gamekit_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/roblox-hack-2021-robux-2021-pc_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030d3.bin
cfac13bbd399af40ac85e7c1478806f3a4195cf809595c0bff047da73526dd62
pdf-font-stream PDF embedded font (sfnt) at offset 0x30D3 22600 bytes
font_01_sfnt_off0000635e.bin
5b43932938f3a3707250dbc60b89ea34eabc20ce783db7ee58a99030714a826a
pdf-font-stream PDF embedded font (sfnt) at offset 0x635E 18608 bytes