Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f1555ecf8b541f5…

MALICIOUS

PDF

33.8 KB Created: 2021-07-01 08:21:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 05fbfae10d8797e3a7a48ad30e5a8988 SHA-1: 1721e3ce09616065489ba44f99c76eed4d80fcd6 SHA-256: 0f1555ecf8b541f515020761ca498e64ef6bb056616eb78789d1f8edbaafd449
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous links to external websites, many of which are SEO-optimized to appear as guides for obtaining free Robux or hacks for games. The ML classifier strongly indicates maliciousness, and the presence of a download button lure further supports a malicious intent. The primary goal appears to be directing users to download potentially harmful files or visit scam pages.

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.co/app/431946152/connection-free-mail-roblox-game-hack PDF link annotation
    • http://www.perpusffup.or.id/repository/how-to-get-free-robux-on-roblox-october-2021_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/coin-master-hacks-for-spins_GM406889139.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/when-you-get-hacked-on-roblox-rage-quit_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/descargar-roblox-hack-robux-infinitos_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/how-to-hack-a-roblox-account-password-2021_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/roblox-world-free-to-use_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/coin-master-free-spins-generator_GM406889139.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/roblox-game-free-download_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-admin-account-roblox_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/freerobuxcodegenerator-roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/744-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/roblox-driveblox-unlimited-money-cheat-engine_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/roblox-premium-free_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/roblox-champion-t-shirt-and-bag-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002deb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DEB 22032 bytes
SHA-256: 3648f1a97fd2cdaf08acce70957e674fd02f8d5675bd70bf62f19b8506170d6c
font_01_sfnt_off00005ee4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EE4 19068 bytes
SHA-256: 7c486acd514eca9320537cb9267f209190a04cc0a1e620b65e80bce88829ee41

Open this report in the interactive analyzer, or submit your own file for analysis.