Malicious PDF — malware analysis report

Static analysis result for SHA-256 16b3e239cfd0b8e8…

MALICIOUS

PDF

35.1 KB Created: 2021-06-18 02:39:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 91391e88406ade7c556507648900386e SHA-1: f333fe0b3e1bf2378ee2576d8818bdd69c940fb7 SHA-256: 16b3e239cfd0b8e8420f12250d5c022745c14af2e60bf2b7b20fa91575e4aa4e
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-get-free-robux-hack-2021-no-verification-game-hack PDF link annotation
    • http://bidship.co.za/uploaded_files/userfiles/files/free-minecraft-skins-ps4_GM479516143.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/robux-prices_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/free-apps-like-roblox_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/free-minecraft-mods-for-xbox-one_GM479516143.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/free-robux-no-human-verification-or-survey-2021-easy_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/more-robux_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/coin-master-game-hunter_GM406889139.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/coin-master-free-spin-download_GM406889139.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/minecraft-switch-free_GM479516143.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/free-executor-roblox-no-key_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/coin-master-hack-apk-download-2021_GM406889139.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/roblox-redeem-codes-free_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_off000030b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30B5 22352 bytes
SHA-256: 1c3e8fac4b73158de43a858c9a115e80186467f599fd54dbf07206b53b69a567
font_01_sfnt_off0000625d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x625D 19624 bytes
SHA-256: e24fc0010decdb1a095fe138f1fba58a21769e00cabb09fc4424c9ee09a35332

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