Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb073436f35aa508…

MALICIOUS

PDF

36.2 KB Created: 2021-07-03 13:47:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d2a4af0871f1c6ab1b782384b6b84bc5 SHA-1: 23ac9bbe326a93d3299a7abfeba52c7e48e3873a SHA-256: cb073436f35aa508cdca1cf994d34a950008a7437a2409c4654ff1f46d306637
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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/431946152/robux-hack-menu-game-hack PDF link annotation
    • http://pustaka.ditjenpkh.pertanian.go.id/pusvetma/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.ditjenpkh.pertanian.go.id/pusvetma/repository/wurst_GM479516143.pdfIn PDF document text
    • http://pustaka.ditjenpkh.pertanian.go.id/pusvetma/repository/pokemon-go-free-balls_GM1094591345.pdfIn PDF document text
    • http://pustaka.ditjenpkh.pertanian.go.id/pusvetma/repository/comment-hacker-roblox-robux-tuto-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.ditjenpkh.pertanian.go.id/pusvetma/repository/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.ditjenpkh.pertanian.go.id/pusvetma/repository/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://pustaka.ditjenpkh.pertanian.go.id/pusvetma/repository/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.ditjenpkh.pertanian.go.id/pusvetma/repository/haw-to-get-free-dominus-on-roblox-2021-march_GM431946152.pdfIn PDF document text
    • http://pustaka.ditjenpkh.pertanian.go.id/pusvetma/repository/coin-master-free-spins-and-coins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://pustaka.ditjenpkh.pertanian.go.id/pusvetma/repository/ios-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.ditjenpkh.pertanian.go.id/pusvetma/repository/how-to-gain-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://pustaka.ditjenpkh.pertanian.go.id/pusvetma/repository/hacked-server-roblox-id_GM431946152.pdfIn PDF document text
    • http://pustaka.ditjenpkh.pertanian.go.id/pusvetma/repository/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://pustaka.ditjenpkh.pertanian.go.id/pusvetma/repository/roblox-catalog-free-pastebin_GM431946152.pdfIn PDF document text
    • http://pustaka.ditjenpkh.pertanian.go.id/pusvetma/repository/can-i-just-get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://pustaka.ditjenpkh.pertanian.go.id/pusvetma/repository/how-to-get-free-roebucks-without-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.ditjenpkh.pertanian.go.id/pusvetma/repository/how-to-hack-roblox-with-cheat-engine-62_GM431946152.pdfIn PDF document text
    • http://pustaka.ditjenpkh.pertanian.go.id/pusvetma/repository/speed-hack-roblox-link_GM431946152.pdfIn PDF document text
    • http://pustaka.ditjenpkh.pertanian.go.id/pusvetma/repository/2021-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.ditjenpkh.pertanian.go.id/pusvetma/repository/roblox-red-hair-free_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_off00003693.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3693 22876 bytes
SHA-256: ad5fadb1ce0ded272744a4bb0f19ecf7fb75174bf69f155b8efb07c078a05ecf
font_01_sfnt_off0000697b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x697B 18732 bytes
SHA-256: 426bc9a94107c0c5b1a45237ed515ae3d7fc7b36b65565e48988c4213545da98

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