Malicious PDF — malware analysis report

Static analysis result for SHA-256 06798ecb8160ff9d…

MALICIOUS

PDF

35.1 KB Created: 2021-07-06 01:54:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e67c6b8dffee494d201978b40886c95b SHA-1: 77aaa1bef75e9936824412de67090a43b86c67c5 SHA-256: 06798ecb8160ff9d800131fc74f451bf5d651313d0c8361b275557978a185e4b
102 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 callback-phone (TOAD) 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/431946152/how-to-hack-roblox-accounts-on-phone-2021-game-hack PDF link annotation
    • http://library.ulb.ac.id/repository/how-to-get-free-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-shinobi-life-level-hack_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-tiktok-followers-without-verification_GM835599320.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/hacked-accounts-of-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-skywars-hack-fly_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/robloxwin-com-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/hack-roblox-admin_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-island-royale-cheat_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-get-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-get-free-robux-pc-_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-apk-hack-32_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-hack-scrit-2021_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-get-a-free-private-server-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-hack-on-roblox-apocalypse-rising-2021_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-hack-roblox-hotel-elephant_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-become-hypebeast-in-roblox-for-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_off0000314d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x314D 21992 bytes
SHA-256: a725260dca157c62f5706264085551cd59b201769c3681420458c0d8b4ff438b
font_01_sfnt_off0000620c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x620C 19788 bytes
SHA-256: e48b3e34ff3a21a02db51fef543f00df2e8cbdbd7d9ff5be73dc5f5f5eb1ae47

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