Malicious PDF — malware analysis report

Static analysis result for SHA-256 64f6a8e55bde882d…

MALICIOUS

PDF

16.5 KB Created: 2021-05-14 07:21:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a852a892794c1e13fe0deaaecfd71471 SHA-1: ba097462d03780c8da5e74308260199ace9c9525 SHA-256: 64f6a8e55bde882d1f291eecd94d7ed3166b16190ab05f2d24611c2fd15ca9d1
134 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a 'free Robux' generator, which is a common lure for phishing and scamming operations. The heuristic firings indicate this PDF is part of a link farm designed to redirect users to potentially malicious content. The ML classifier also strongly suggests maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • 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.
  • 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.xyz/app/431946152/free-robux-master-game-hack PDF link annotation
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/cm-spins_GM406889139.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/link-for-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/free-role-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/free-spins-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/free-roblox-gfx_GM431946152.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/roblox-rewards_GM431946152.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/latest-free-spin-coin-master-daily_GM406889139.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/master-coin-hack-mod_GM406889139.pdfIn PDF document text

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