Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fdb604243d20653…

MALICIOUS

PDF

35.5 KB Created: 2021-06-27 00:10:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5b9d26d71161a5f658c67c2e19b59d4c SHA-1: e322f9090758b88669408ccc4b6386e0242edc60 SHA-256: 9fdb604243d20653d4f11953e537a8498b2aabdbf67b8970e0387c509113c5cf
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.co/app/431946152/free-roblox-outfits-2021-game-hack PDF link annotation
    • http://perpus.polbitrada.ac.id/repository/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/www-coin-master-hack-com_GM406889139.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/gift-card-roblox-free-codes_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/seven-roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/hacks-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/roblox-hack-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/wow-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/mcpe-download_GM479516143.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/roblox-prison-life-hack-download_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/how-long-is-the-minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/free-model-game-system-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/roblox-zone-free-robux_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_off00003346.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3346 22028 bytes
SHA-256: 37f312adf39a977f98f659cb311d9fadfa22a9f85b1f883156e406a65abffd87
font_01_sfnt_off00006464.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6464 19416 bytes
SHA-256: a242c086af701212af7b881199acd0b204cb1f7b110dba78a4069fe4bdcc1034

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