Malicious PDF — malware analysis report

Static analysis result for SHA-256 070ca5b637ed883e…

MALICIOUS

PDF

50.2 KB Created: 2021-06-03 11:45:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 7060f6088eaf4a29616b8b8245c17e9e SHA-1: e54c1bb13231fa79f454ac4bbfe33c319ef02c49 SHA-256: 070ca5b637ed883e677317207f203522959cb33fdf342ef6716199473d030b40
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 0.9789

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/cute-free-roblox-clothes-game-hack PDF link annotation
    • http://katalog.gemalibrary.net/repository/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/robloxbux-us-generator_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/coin-master-hack-version-2021-download_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/freespinandcoin-blogspot_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/moonactive-free-spins_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/blox-fun-info_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/is-free-robux-real_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000538f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x538F 28376 bytes
SHA-256: 79832d5920da50f48d2c160339f5650d79032bf8e47fc56dccc0143ca81a5b7b
font_01_sfnt_off00009453.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9453 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off0000a165.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA165 18360 bytes
SHA-256: e86e78400892ae5dd4aa52b188d1114de395e07e4f293bb7f48ee2d479d87499

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