Malicious PDF — malware analysis report

Static analysis result for SHA-256 27656b965f391985…

MALICIOUS

PDF

33.8 KB Created: 2021-06-27 08:20:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e91909330d948939a37013a386153b06 SHA-1: da03747bdd99fd002ceef8ef3b4c639f8ae9f81d SHA-256: 27656b965f39198554764d141f904c84b933c1887488b24477329f7c76e11932
142 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, 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 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/pro-skin-free-roblox-game-hack PDF link annotation
    • http://wadimor.co.id/media/imagesfiles/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/how-to-hack-roblox-accounts-2021-december_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/coin-master-card-collection-hack_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/how-do-you-earn-robux_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/todays-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/roblox-cheat_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/free-roblox-gameicon_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/roboxy-com-for-robux-free_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/get-free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/robux-online_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/how-to-get-free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002db9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DB9 22364 bytes
SHA-256: 1fee322fc876c3121f8dc11771f8ec1ce45568ced1cf5da0fd5a8b0766cd6c53
font_01_sfnt_off00005eea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EEA 19092 bytes
SHA-256: 0260c1c02db5d88af7c497a07026a7f74969ea5610f9407028169b637a14ad0d

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