Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ae87db59380dcfe…

MALICIOUS

PDF

36.4 KB Created: 2021-07-04 17:06:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 9e61ce9bbe7c0c96550a549dc3715a17 SHA-1: d35b9ba36c834db626073982abcf78c8cd08245d SHA-256: 9ae87db59380dcfee775797575a0fec7beb95269390117c8489701ce75103da5
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/how-to-get-free-spins-on-coin-master-facebook-game-hack PDF link annotation
    • http://digilib-unirow.ac.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/free-coins-2021-coin-master-link_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/esp-hack-for-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-on-facebook_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/where-to-buy-pubg-uc_GM1330123889.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/is-roblox-free-on-nintendo-switch_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/how-do-you-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-online-hack-download_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/tiktok-free-nose-job_GM835599320.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/roblox-apocalypse-rising-hack-december-2021_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/roblox-cheat-codes-for-hoes_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/rewards-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/how-to-get-free-robux-without-verification-or-surveys_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_off00003668.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3668 23228 bytes
SHA-256: 0eb33fc2419bffb0460efb0a23a01d0d798b5fc78b607648b9571c236b152a04
font_01_sfnt_off00006a6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A6F 18664 bytes
SHA-256: e014b96f3b4d84aa2f2a11dde0e83fd0357a22873c3da6238c6514ecd5ae27f1

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