Malicious PDF — malware analysis report

Static analysis result for SHA-256 29e8329820b0d900…

MALICIOUS

PDF

45.5 KB Created: 2021-06-11 05:20:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 73fe083298be7697aac2f4add8dfdaa3 SHA-1: 6179e68e5e112d0dd0738bbb8caf135317d06171 SHA-256: 29e8329820b0d9003214faff1353d2a75325eafcf0e923d9d0035e2b94962509
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 0.9864

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 https://netcdn.tw/app/431946152/synapse-roblox-hack-buy-game-hack PDF link annotation
    • https://opac.umrah.ac.id/repository/free-robux-gift-card-codes-2021-on-images_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/http-bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-hacking-roblox-tutorial_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/easy-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-login-free-download_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-jailbreak-free-vip-server-link-new_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-roblox-hats3_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/get-free-cards-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-apk-mod-free-download_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/links-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-plus-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-hack-server_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-food_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005182.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5182 26560 bytes
SHA-256: f1fa6b8a9a84915a39c2bf1de63047fed9a7a271b9185f1c9407f43ce187ad30
font_01_sfnt_off00008de2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DE2 18676 bytes
SHA-256: 3f6d55b5ae16c4631566ce42d19e433f0ee79ad289b974d78a72409729ae3491

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