Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d6a0dec533bf044…

MALICIOUS

PDF

34.6 KB Created: 2021-07-01 09:16:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 6baa96236947ea847ff935c9ce0b92f7 SHA-1: 2dec052393309f6b3502db6f0a0102f9ad324293 SHA-256: 7d6a0dec533bf044cc599dec2ce9bd71a887fdd8443b49effc410f2fcad81b25
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a high-confidence heuristic indicating it links to a 'free generator / game hack' redirector. The document body and extracted URLs reinforce this, pointing towards lures for game-related exploits. The primary IOC is the malicious URL used in the lure.

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/free-roblox-redeem-codes-that-haven-game-hack PDF link annotation
    • https://c2o-library.net/catalog/repository/how-to-get-free-robux-on-ipad-mini_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-do-u-trade-someone-for-free-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-robux-without-downloads-hypur_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-get-free-clothes-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-hack-somebodys-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/wurst-112_GM479516143.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/roblox-how-to-get-free-lvl-7-hacks-no-virus_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-robux-com-real_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-hack-roblox-may-2021_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/roblox-free-download-for-windows-7_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/minecraft-bedrock-client_GM479516143.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-roblox-robux-gift-cards_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-robux-without-verify_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_off00002fff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FFF 22148 bytes
SHA-256: 8d018408680ce5829664fd1ea8d1bc075cc936189a199b524b436d9c9384c948
font_01_sfnt_off000060fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60FD 19468 bytes
SHA-256: 8e102704dfe498214eda4c67e76243d50dc71afc91d8722d958c5b4947cd1516

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