Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cbade941708f3cf…

MALICIOUS

PDF

34.5 KB Created: 2021-06-26 08:58:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a84e16fcbc026b51eef1bbba645053a2 SHA-1: 5294448e86ba5ab8eed3ac14b689541dd87b2350 SHA-256: 2cbade941708f3cf3d2622e1fc3a995c4eeb7973fc4d99712f6cf2b03f023f02
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, many of which are SEO-optimized to appear as legitimate guides for obtaining free in-game currency or cheats for popular games like Roblox and Coin Master. The primary URL, http://netcdn.co/app/431946152/free-robux-legit-no-human-verification-2021-game-hack, suggests a lure for a scam or malware download. The presence of a 'download button' heuristic further supports the malicious intent of directing users to external, potentially harmful, resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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.co/app/431946152/free-robux-legit-no-human-verification-2021-game-hack
    • http://labfisika.undiksha.ac.id/perpustakaan//repository/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan//repository/coin-master-cheats-without-verification_GM406889139.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan//repository/free-spin-coin-master-2021-link_GM406889139.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/how-to-get-20210-robux-free_GM431946152.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/free-apk-mod-coin-master_GM406889139.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/admin-roblox-free_GM431946152.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/free-roblox-followers_GM431946152.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan//repository/how-to-get-free-robux-not-a-scam_GM431946152.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/minecraft-hack-ios_GM479516143.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/roblox-the-conquerors-3-money-hack_GM431946152.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/coin-master-free-attack_GM406889139.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/free-robux-legit_GM431946152.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/roblox-cheat-sheet_GM431946152.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan//repository/how-to-get-free-cards-for-coin-master_GM406889139.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan//repository/new-free-money-links-coin-master_GM406889139.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan//repository/getrobux-now_GM431946152.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan//repository/coin-master-hack-version-download-ios_GM406889139.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan//repository/coin-master-hack-root_GM406889139.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/how-to-get-unlimited-robux-2021_GM431946152.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/minecraft-java-edition-free-download_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002c9e.bin
a53dc2f6f64dd110f607aeae45b032a218f82d20e7dea5b95442e6b1478dfe00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C9E 23004 bytes
font_01_sfnt_off00006026.bin
9c2b0739c57a02da0247dc3c5b441d077662680f4b79045629dd77357caba27e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6026 19736 bytes

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