Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8a8bf8ba4dacebe…

MALICIOUS

PDF

35.7 KB Created: 2021-07-05 14:20:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 1bd372097a853f346baa129faadc6684 SHA-1: a29f37b6cd725672883a191296ac793a1d75ac48 SHA-256: f8a8bf8ba4dacebe3adc1bfaa399c1d192526b3d823839a1aed0f086005a5339
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-free-spins-link-2021-twitter-game-hack PDF link annotation
    • https://library.itn.ac.id/perpusitn/repository/roblox-phantom-forces-money-cheat_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-minecraft-skin-creator_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/robux-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/is-roblox-free-on-xbox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-adonis-admin-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/minecraft-anarchy-server-no-hacks_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-pet-food-hack_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/como-hacer-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/pubg-40-uc-buy_GM1330123889.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-daily-free-rewards_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-someone-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/awesome-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/pubg-uc-carding-in-pakistan_GM1330123889.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/cheat-engine-2021-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-hacks-no-downloading_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
stream_002_off00003249.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3249 23272 bytes
SHA-256: af10e8b7a7180c25f007222e2c671e4dd3b6b0ab3e9e1255029381768a3b7d75
font_01_sfnt_off000066c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66C9 18908 bytes
SHA-256: b043e4a019f31cebff09b938e1120b84c3066f7adfb90df1330482920140b640

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