Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2223fcd2bac2f84…

MALICIOUS

PDF

34.0 KB Created: 2021-06-17 17:06:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b3aa849f4007786e322f16b40e8739ae SHA-1: 23acff3862570169c54c0098caf9e2ed0197ee4a SHA-256: c2223fcd2bac2f84b03127a5405c00f90cc9ad13ef689d39772b4bb161e9c836
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/how-to-play-roblox-on-phone-for-free-game-hack PDF link annotation
    • https://opac.umrah.ac.id/repository/hacks-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-minecraft-codes_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/master-8-ball-pool-free-coins_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/comment-tlcharger-un-cheat-sur-roblox-avec-explication_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/cheat-roblox-cb-r-download_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/rbx-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-free-gry_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-free-items_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/pokemon-go-free-to-download_GM1094591345.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-hack-in-roblox-pc_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/bubbatron11-roblox-hacker_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-spins-2021-blogspot_GM406889139.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_off00002fd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FD5 21764 bytes
SHA-256: 5eb5e4bc63bb94c044aa9c539173ebda9c438a6b945a44da341ad0fe06c3dd56
font_01_sfnt_off00005fa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FA0 19128 bytes
SHA-256: 466c8d73248d6adb210177110ac7d52cb499f7b8cea0c2c7fc9e20485e8e2c88

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