Malicious PDF — malware analysis report

Static analysis result for SHA-256 58b5803d8e11dfbe…

MALICIOUS

PDF

35.2 KB Created: 2021-07-06 10:14:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 0105360b945c15db56d5519395c622c5 SHA-1: d26ae3e151986ca5cf2ba1612e4dd053fcb3521f SHA-256: 58b5803d8e11dfbe4cbdc153a48fcf40f1c4796d59ee271248622bf5c2c5679f
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, identified as a link farm, that direct users to external websites. These links are designed to appear as download sources for game hacks and in-game currency, indicating a phishing or scam attempt. The ML classifier strongly supports the malicious nature of this PDF.

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/hack-coin-master-spin-android-game-hack PDF link annotation
    • http://pustaka.fateta.unand.ac.id/repository/the-wild-west-roblox-free_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/free-spin-link-coin-master-app_GM406889139.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/www-robux-us_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/free-robux-live_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/free-robux-roblox-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/coin-master-hack-ios-apk_GM406889139.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/coin-master-games-download-free_GM406889139.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/coin-master-attack-hack-apk_GM406889139.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/hack-roblox-gs-co_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/pokemon-go-free-clothes-code_GM1094591345.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.fateta.unand.ac.id/repository/roblox-free-robux-every-5-seconds_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32A7 23120 bytes
SHA-256: 200879f8fe63fff1239adeaf2223c6c3e6f70caf251e35d8af8c8b693af1fde3
font_01_sfnt_off00006691.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6691 18352 bytes
SHA-256: a07aa63f24b352fd81218d8ca65e21e458501f47c11eb6d03a85a06766069f6e

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