Malicious PDF — malware analysis report

Static analysis result for SHA-256 e12c9a41318ffad1…

MALICIOUS

PDF

35.8 KB Created: 2021-06-20 04:43:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 940dee9f51d46c871aa31f9d890b7c4f SHA-1: c4761e1f71cba022d0a821c5f0cdd1d55af1c541 SHA-256: e12c9a41318ffad12bb1d773d699916e0bf3850509452f82be1bee1c4194c5d8
122 Risk Score

Malware Insights

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

This PDF document exhibits malicious behavior by acting as a link farm, directing users to numerous other PDF files hosted on an IP address. The document's content and the heuristics indicate a lure for free Robux and game hacks, likely leading to further malicious downloads or scams. The ML classifier strongly supports the malicious verdict, and the presence of embedded URLs and a link farm points to a coordinated effort to distribute malware or facilitate phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/how-create-roblox-hack-place-game-hack
    • http://118.174.0.244/UserFiles/File/free-spins-coin-master-links-app_GM406889139.pdf
    • http://118.174.0.244/UserFiles/File/get-free-robux-today-com_GM431946152.pdf
    • http://118.174.0.244/UserFiles/File/roblox-how-to-get-free-robux-website_GM431946152.pdf
    • http://118.174.0.244/UserFiles/File/roblox-flood-escape-2-hacks_GM431946152.pdf
    • http://118.174.0.244/UserFiles/File/how-can-u-get-free-robux_GM431946152.pdf
    • http://118.174.0.244/UserFiles/File/strucid-aimbot_GM431946152.pdf
    • http://118.174.0.244/UserFiles/File/free-robux-com-no-verification_GM431946152.pdf
    • http://118.174.0.244/UserFiles/File/how-to-change-your-username-in-roblox-for-free_GM431946152.pdf
    • http://118.174.0.244/UserFiles/File/freerobux-hack-us_GM431946152.pdf
    • http://118.174.0.244/UserFiles/File/hacker-wed-robux_GM431946152.pdf
    • http://118.174.0.244/UserFiles/File/free-roblox-injector_GM431946152.pdf
    • http://118.174.0.244/UserFiles/File/is-there-any-way-to-get-free-robux_GM431946152.pdf
    • http://118.174.0.244/UserFiles/File/claim-free-spins-coin-master_GM406889139.pdf
    • http://118.174.0.244/UserFiles/File/free-robux-no-hack-or-download_GM431946152.pdf
    • http://118.174.0.244/UserFiles/File/coin-master-free-link-2021_GM406889139.pdf
    • http://118.174.0.244/UserFiles/File/how-to-create-group-in-coin-master-free-spins_GM406889139.pdf
    • http://118.174.0.244/UserFiles/File/how-to-get-free-robux-without-verification_GM431946152.pdf
    • http://118.174.0.244/UserFiles/File/free-coin-master-spins-for-today_GM406889139.pdf
    • http://118.174.0.244/UserFiles/File/roblox-free-clothes-hack_GM431946152.pdf
    • http://118.174.0.244/UserFiles/File/blox-supply-free-robux_GM431946152.pdf
    • https://www.roblox.com/my/tasks
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003230.bin
6d6aa2b4d5de9468a3ec6ab80d34ba2abeded0dee7ddc180e8ff3c4fb304b6e7		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3230 23316 bytes
font_01_sfnt_off000066d8.bin
6e2d7e3050fc62ff8ade72d1ff51c474e743efed9a0da6d51e7eda8c4f3ed07a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66D8 19076 bytes

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