Malicious PDF — malware analysis report

Static analysis result for SHA-256 27c3ce43b628fd38…

MALICIOUS

PDF

37.4 KB Created: 2021-06-19 21:24:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1b4e8460b98f1f811cd66db0de1bd3b5 SHA-1: 504abedf6c8d9394a939ef49f0ea512b6afb245d SHA-256: 27c3ce43b628fd38e5d4dd9fc85107837bfb3d74da8118f82a57d30fb111e32c
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-unblock-roblox-hack-a-wifi-password-on-computer-game-hack PDF link annotation
    • http://digilib.akperkabpurworejo.ac.id/repository/coin-master-free-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/pubg-2021-uc_GM1330123889.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/coin-hackhub-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/synapse-roblox-free-download_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/free-coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/coin-master-hack-apk-july-2021_GM406889139.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/no-loading-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/how-to-log-out-of-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/free-coin-spin-daily-link-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/coin-master-viking-quest-hack_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/rbx-com_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/spin-link_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/minecraft-hacked-client-bedrock_GM479516143.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/roblox-royalty-free-rap_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/roblox-dominus-free_GM431946152.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/best-free-lumber-tycoon-2-roblox-injectors_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/roblox-bubblegum-simulator-cheats-2021_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_off00003617.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3617 23168 bytes
SHA-256: 5e90ce4ed07956744f107ae7f9fb68d943a42425e8c652cae3052be9dc24c566
font_01_sfnt_off00006a1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A1F 20144 bytes
SHA-256: 91a75bf3f70596ac69f776023991833e9398e6dd4e0b9344c762cc847f09909c

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