Malicious PDF — malware analysis report

Static analysis result for SHA-256 213f00d096e07be5…

MALICIOUS

PDF

35.0 KB Created: 2021-07-06 09:21:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 9f36cf3446b80bb2e761932a451cd670 SHA-1: 4c4da70c35b3799654b12690c317f074049eeab3 SHA-256: 213f00d096e07be5c8be738080239a13211af53cb4a761496117ff4b0c330dc5
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/406889139/coin-master-daily-free-spin-and-coin-game-hack PDF link annotation
    • http://perpustakaan.urindo.ac.id/repository/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/free-robux-offers_GM431946152.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/break-block-roblox-script-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/coin-master-free-coins-amp_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/coin-master-cheats_GM406889139.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/free-robux-codes-2021-june_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/robux-console-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/robux-no-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/free-coin-master-coins-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/minecraft-mobile-free_GM479516143.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/how-to-use-paid-gear-roblox-in-studio-free_GM431946152.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/free-hair-roblox-edit-avatar_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/haktuts-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/roblox-accounts-getting-hacked_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/coin-master-free-box_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/free-robux-pins_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/roblox-hack-tool_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
stream_002_off00003187.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3187 22784 bytes
SHA-256: e4c367fa0a0d3d4183e64c0b2ba408aa36570a5341579251d868a6161307dcf1
font_01_sfnt_off0000649b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x649B 18772 bytes
SHA-256: a1dc96cae1db032b501f6986f060f4567329d4c170f8890bd2780cb4b8189df7

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