Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbd505e410878a75…

MALICIOUS

PDF

34.4 KB Created: 2021-06-26 05:21:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 54532fdafc69fe88dd275f0b83b4e3b2 SHA-1: 67652644c701970574820386336315ca3e91cb39 SHA-256: cbd505e410878a7504c226e9907640fbd62cc4e16757e0b7833d4e2989bb4a66
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a lure related to 'Roblox' game hacks and free items, directing users to potentially malicious websites. The ML classifier strongly indicated maliciousness, and the heuristics confirm the presence of external URIs used in a redirection lure. No scripts were extracted, but the document's structure and embedded links suggest it's designed to trick users into visiting compromised or malicious sites.

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/roblox-hoodie-t-shirt-free-shipping-game-hack PDF link annotation
    • http://lib.icbc-indonesia.org//repository/tiktok-for-free-textbooks_GM835599320.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/how-to-hack-2021-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-minecraft-severs_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-30-days-old-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-op-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/raviz-cheating-roblox_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/hack-de-monedas-de-roblox_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/fast-robux-online_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_off00002fc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC5 22084 bytes
SHA-256: b51c0c87fa81cdd1ade7d503acd677c06564801ca83a25add1d8622e9df90540
font_01_sfnt_off0000609f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x609F 19388 bytes
SHA-256: 7c436b226cbda7f63e4c507018eea2c7af22dd69a2f61dcea954ab9b7efafd53

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