Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb6abfb33606a279…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 12:13:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: f7ce15d2add7cb3d6461374958f51ba3 SHA-1: a9c132789b84a6428aec4fb0dda374c388b92851 SHA-256: bb6abfb33606a279fb7bb42d2f434cd8c999f8856e493ba724fb4f87f8eaab5d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. 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 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.tw/app/431946152/rbxoffer-com-free-robux-game-hack PDF link annotation
    • https://deutsch-study.com/image/data/files/hacks-and-cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/easy-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/how-to-hack-someone-home-in-roblox-high-school_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-disney-plus-accounts-tiktok_GM835599320.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-robux-windows_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/cute-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-tiktok-fans-hack_GM835599320.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/coin-master-connection-lost-hack_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/roblox-jailbreak-hack-exploit_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/como-hackear-un-jugador-de-roblox_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/minecraft-free-download-no-virus_GM479516143.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/robux-apk_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/i-will-hack-and-kill-you-parent-roblox-group_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/pokemon-go-free-to-play-guide_GM1094591345.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-robux-today_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-im-gay-roblox-shirt_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/how-to-hack-someones-account-on-roblox-2021_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_off00002f35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F35 23108 bytes
SHA-256: ce90c3b09695837a4b324206b2662c7d4236e30fc836c877b874bd987ff6b93a
font_01_sfnt_off00006330.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6330 18976 bytes
SHA-256: 2de607ebb51e2b40921b87b2c59dd41d6317f330d4e445ad75b187d877423626

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