Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fd234bbfe4db748…

MALICIOUS

PDF

34.2 KB Created: 2021-07-04 22:11:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c0633acdbdb3000bbddc67ccb9700d8d SHA-1: e8d70aa767860dcfe4bfbc31783ae24b47c9fc9e SHA-256: 4fd234bbfe4db748a96450aea9f8303ca2b4877d4afbe8d603d5cca176367431
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a high-confidence heuristic indicating it links to a 'free generator / game hack' lure. The document body and extracted URLs reinforce this, pointing to sites offering Robux hacks and similar game-related cheats. While no scripts were extracted, the primary attack pattern involves social engineering via a deceptive link, likely leading to a malicious download or phishing site. The ML classifier also strongly flagged this PDF as malicious.

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.tw/app/431946152/play-games-for-robux-game-hack PDF link annotation
    • https://library.itn.ac.id/perpusitn/repository/free-robux-codes-list-pastebin_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/minecraft-free-download-mobile_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/new-account-roblox-free_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/release-boku-no-roblox-remastered-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-spins-coin-master-march-2021_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-you-get-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-free-no-sign-in_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-roblox-bird_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/dayz-roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/access-here-https-roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-pet-snacks-in-coin-master_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-do-you-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-re-roblox-server-hack-script_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/minecraft-wurst-client_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-roblox-gea_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-2021-september_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_off00002ead.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EAD 22180 bytes
SHA-256: e5db6b5b5fefc96c7e4b9898b43e4613c152c91d009e370d19c025c03cc2b6f1
font_01_sfnt_off00005fb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB0 19384 bytes
SHA-256: e393570b0d60ff7b9dd7380b11e6309cd3d6d4e66dbc1de9df81cd5339ea4d07

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