Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc3ddcfe9b3c0d12…

MALICIOUS

PDF

34.9 KB Created: 2021-07-05 10:42:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 13aeca9b7c74976283571b3cce3f6954 SHA-1: 166f4599f09865efb318248be1ae683292efd16d SHA-256: bc3ddcfe9b3c0d123d6a72c5ddb872184a19e1e8679cb7851cf608fdbafe82ef
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. It uses a fake browser/software-install 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/406889139/coin-master-free-spin-now-game-hack PDF link annotation
    • http://mtsn-baranti.com/perpus/repository/taste3-com-roblox-online-hack_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-cheats-without-verification_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-hack-2021-android-fast_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/get-more-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/freespincoin-masterlinkdownload_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-chrome-extension_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/prison-life-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/all-apocalypse-rising-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-no-survreys_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/cheat-engine-no-longer-works-on-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/eletric-state-roblox-fast-money-and-free-money-hack_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/hot-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-hack-apocalypse-rising-2021-download_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/infinity-heroes-roblox-hack_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/paginas-de-hacks-de-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-builders-club-hack-free-download_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/youtube-how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/hackear-tarjeta-virtual-para-roblox_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_off000032ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32EA 22640 bytes
SHA-256: ecb2e3dd53ce02fc62f552f6d632d0ca7f69c7be82fc5fa314899309b0bf0f68
font_01_sfnt_off00006566.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6566 18336 bytes
SHA-256: 6b20469be8faec5c8c7f2170c7fbb481140104050cd6a6398e6de2d19d913737

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