Malicious PDF — malware analysis report

Static analysis result for SHA-256 e00a10babcd5a8be…

MALICIOUS

PDF

45.9 KB Created: 2021-06-03 08:38:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ec03fe6d31b2e4c1bb2bd39a73fdc966 SHA-1: ead285f92b3fe820984e6772694bdb60e4be8935 SHA-256: e00a10babcd5a8bec2d1f85d25a28cd60152d09cd61219a05d9b450aae9667a2
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 0.9864

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 https://netcdn.online/app/431946152/free-robux-with-no-verification-game-hack PDF link annotation
    • https://vierabyragazze.com/upload/files/free-spin-and-coin-blogspot_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/best-free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-roblox-svg_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-robux-games_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/static-moonactive_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-free-spins-and-coins-haktuts_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-robux-download_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/sites-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-get-more-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/robux-miner_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/roblox-com-free_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
stream_004_off00005199.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5199 27808 bytes
SHA-256: 8bf206b8fac683b7ef056ab6bfa02684d25717cc7a449743bcb263dab337befd
font_01_sfnt_off00008f18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F18 18964 bytes
SHA-256: 882e97bebd076dae688415b0184bb224dca7d5b64082a0b27c077a0c76cfc979

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