Malicious PDF — malware analysis report

Static analysis result for SHA-256 317e50d03f3d04f5…

MALICIOUS

PDF

33.5 KB Created: 2021-06-30 04:08:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e1ff137b01873b55a61119dd39c29f53 SHA-1: f949212a0b863c831db37914e36856b6be610a48 SHA-256: 317e50d03f3d04f51792a806fb8008e587e6f7da9c3520c27c1b9b3c258481d4
142 Risk Score

Malware Insights

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

The PDF document contains numerous links, including one to 'roblox-hack-game-hack', and is flagged as a link farm designed to generate SEO traffic. The document body also contains similar lures and references to game hacks and free currency. This indicates a likely attempt to redirect users to malicious websites for phishing or scam purposes.

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/roblox-hack-game-hack PDF link annotation
    • https://vierabyragazze.com/upload/files/games-on-roblox-that-give-you-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-hack-a-game-server-on-roblox_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-get-spins-for-free-on-coin-master_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/roblox40com-robux_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-robux-working_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-link-for-spins_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-get-more-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/roblox-bubble-gum-simulator-hack-script-pastebin-2021_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-make-a-roblox-hack-gui_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-robux-accounts-youtube_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-roblox-printables_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-buy-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-hack-roblox-tutorial_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/pourquoi-quand-jessaie-de-hacker-des-robux-a-marche-jamais_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-clicker-robux_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/roblox-fun-com-free-robux_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_off00002c7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C7A 22432 bytes
SHA-256: 4c912a18aa14c31821c85677d83c76eaa9973e4017923eb8fe27b59f1e747617
font_01_sfnt_off00005eb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB5 18656 bytes
SHA-256: 999563e5ceb90bacb24403d8989521a1fbef177d0399db3bbb86b28fcd553b17

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