Malicious PDF — malware analysis report

Static analysis result for SHA-256 430933301e2c0f4c…

MALICIOUS

PDF

35.8 KB Created: 2021-06-30 09:16:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: b2147f00725f124dd2d164600827f80e SHA-1: 029f9773a5ad9feca9f31c9263120065846c8ef3 SHA-256: 430933301e2c0f4c97f8e9a95e5330fa4675858319851ce00e9277c062433449
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external resources, many of which are SEO-optimized pages promising free Robux or game hacks. The ML classifier strongly indicated maliciousness, and the presence of a download button lure reinforces the phishing attempt. The document's primary function appears to be directing users to download potentially harmful content from the provided URLs.

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/mythical-chaos-robux-hack-v3-0-game-hack
    • http://opac.akafarma-aceh.ac.id/repository/free-robux-com-roblox_GM431946152.pdf
    • http://opac.akafarma-aceh.ac.id/repository/how-to-get-free-robux-in-2021-easy-no-hacking_GM431946152.pdf
    • http://opac.akafarma-aceh.ac.id/repository/how-to-get-free-money-on-roblox-high-school-2_GM431946152.pdf
    • http://opac.akafarma-aceh.ac.id/repository/how-to-get-back-your-hacked-roblox-account_GM431946152.pdf
    • http://opac.akafarma-aceh.ac.id/repository/free-spins-and-coins-coin-master-2021_GM406889139.pdf
    • http://opac.akafarma-aceh.ac.id/repository/earn-robux_GM431946152.pdf
    • http://opac.akafarma-aceh.ac.id/repository/free-robux-no-password-required_GM431946152.pdf
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-free-spins-daily_GM406889139.pdf
    • http://opac.akafarma-aceh.ac.id/repository/how-to-hack-roblox-players_GM431946152.pdf
    • http://opac.akafarma-aceh.ac.id/repository/robux-earning-sites_GM431946152.pdf
    • http://opac.akafarma-aceh.ac.id/repository/roblox-free-without-installing_GM431946152.pdf
    • http://opac.akafarma-aceh.ac.id/repository/free-spin-today-coin-master_GM406889139.pdf
    • http://opac.akafarma-aceh.ac.id/repository/how-to-hack-robux-on-mobile_GM431946152.pdf
    • http://opac.akafarma-aceh.ac.id/repository/how-to-get-free-robux-no-human-verification_GM431946152.pdf
    • http://opac.akafarma-aceh.ac.id/repository/free-robux-live_GM431946152.pdf
    • http://opac.akafarma-aceh.ac.id/repository/nija-legend-roblox-hack_GM431946152.pdf
    • http://opac.akafarma-aceh.ac.id/repository/legit-way-to-get-free-robux_GM431946152.pdf
    • http://opac.akafarma-aceh.ac.id/repository/how-to-hack-roblox-with-brutis_GM431946152.pdf
    • http://opac.akafarma-aceh.ac.id/repository/roblox-jailbreak-editor-hack_GM431946152.pdf
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-free-spins-and-coins-haktuts_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030b4.bin
2b9473ba7e675108b01003cc66957bf013d7d62cd906e1a310aeaf8702161001		 pdf-font-stream PDF embedded font (sfnt) at offset 0x30B4 22772 bytes
font_01_sfnt_off000063cd.bin
ccfea8d0dd7ff615147acd2d757827bcac74d53ae7815e9edc346485da0b2ad3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63CD 20040 bytes

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