Malicious PDF — malware analysis report

Static analysis result for SHA-256 7815b344a8f8094e…

MALICIOUS

PDF

34.3 KB Created: 2021-07-04 23:58:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 1ba4374f575b85bcef374e5e8507a199 SHA-1: 4f21d211be498e0683240ae8c317f2adf8d0b60a SHA-256: 7815b344a8f8094ee28b247d42cd67cfbffde9bf7e16489f8da85579e43b0c10
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a fake-CAPTCHA lure. 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 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/479516143/minecraft-bedrock-client-game-hack PDF link annotation
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/how-to-get-minecraft-for-free-on-iphone-2021_GM479516143.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/coin-master-facebook-hack_GM406889139.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/best-free-roblox-executor_GM431946152.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/free-roblox-usernames-and-passwords_GM431946152.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/free-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/coin-master-free-spins-links-app_GM406889139.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/robux-page_GM431946152.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/free-robux-now_GM431946152.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/how-to-send-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/coin-master-free-spin-and-trading_GM406889139.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/free-robux-no-human-verification-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
font_00_sfnt_off000031dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31DC 22088 bytes
SHA-256: 9b14345dcdd12d6cf97102d421abf197648c053df4eeb1327cf5784e455df063
font_01_sfnt_off0000628a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x628A 18632 bytes
SHA-256: 3c30631df9040f056af34f95d565642b95d808833d1f41454e01e129915f193b

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