Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ce76749e5b8dffe…

MALICIOUS

PDF

33.1 KB Created: 2021-07-06 16:32:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 69749eea542d480eb8f596165a3385e1 SHA-1: 488f5fcf1440239d70c97fe17f7e63eff1f16958 SHA-256: 2ce76749e5b8dffe9f70c4aad6cbe5a602b9c794cd0e1383738b51b299f67764
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 0.9824

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/freerobux-co-game-hack PDF link annotation
    • http://e-library.akbid-purworejo.ac.id/repository/roblox-hacking-gameq_GM431946152.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id//repository/coin-master-hacks-iphone_GM406889139.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id//repository/clean-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id/repository/coin-master-mod-version-free-download_GM406889139.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id/repository/how-to-hack-tnt-rush-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id/repository/give-free-robux_GM431946152.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id//repository/minecraft-kill-aura_GM479516143.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id/repository/how-can-i-get-free-coinsn-coin-master_GM406889139.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id//repository/http-bitly-coin-master-free-2021-spins_GM406889139.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id/repository/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id//repository/free-roblox-boy-hair_GM431946152.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id/repository/is-kinetic-code-going-to-be-free-roblox_GM431946152.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id/repository/can-i-change-my-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id/repository/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id//repository/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id/repository/robux-hack-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id//repository/hack-version-of-coin-master_GM406889139.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id/repository/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id//repository/coin-master-hack-with-facebook-login_GM406889139.pdfIn PDF document text
    • http://e-library.akbid-purworejo.ac.id/repository/static-moonactive-net_GM406889139.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_off00002ad5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AD5 22736 bytes
SHA-256: 931c0bcca198f60bbf14c4e443392a5a5b60d1fb4a971db67befa2cffbfe0fb3
font_01_sfnt_off00005d7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D7A 18716 bytes
SHA-256: b436464f6dc3f91ee9d394fa71dc77356e240180086c0e2ba055b597967e29bd

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