Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5d6990d4044bcf5…

MALICIOUS

PDF

35.2 KB Created: 2021-07-06 18:46:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 1b3211616134fe2a13eb264de2fb1c90 SHA-1: 34df70269b96ae896c22cd601a4fdacd79370c36 SHA-256: d5d6990d4044bcf5b305ca56c3fb2bcf0e435f84ffa3cf59d05d479c682acad4
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/how-to-hack-someones-roblox-account-2021-game-hack PDF link annotation
    • http://oca.undil.tl/repository/coin-master-free-spins-cheat-codes_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-to-get-everything-free-on-the-roblox-catalog_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-do-you-get-free-robux-and-tix-on-roblox_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-do-you-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/level-coin_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/roblox-dominus-free-2021_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/roblox-fly-hack-download-free_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/roblox-how-to-upload-custom-thumbnails-for-free_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/gaxly-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/robux-get-com_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/minecraft-modded-client_GM479516143.pdfIn PDF document text
    • http://oca.undil.tl/repository/get-free-tiktok-followers-no-verification_GM835599320.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-to-get-free-spins-on-coin-master-2021-links_GM406889139.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_off0000327e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x327E 21792 bytes
SHA-256: 8a96e392b3e291833ac1b8aa8bbb5075962fd1d1039cbaf1800ac5a806f4073b
font_01_sfnt_off0000622b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x622B 19724 bytes
SHA-256: f50c412bcfe1d1f98486a75b2c7138549e2bea37deae9173a274dae717afecb9

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