Malicious PDF — malware analysis report

Static analysis result for SHA-256 08faa0afc8e3e9dc…

MALICIOUS

PDF

33.2 KB Created: 2021-07-05 14:53:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 7a6ca9883c6a0075bee6920a296b414f SHA-1: 7108535daa6a673821f7c6ac6287ff7b471e1f74 SHA-256: 08faa0afc8e3e9dc30c971a72e1212068eaf18739db3177ecc907036ad9d9d76
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of game hacks and free generators to entice users to click on embedded links. The primary link, http://netcdn.tw/app/479516143/how-to-make-a-free-server-in-minecraft-java-game-hack, is identified as a redirector to potentially malicious content. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest a malicious intent to redirect users to external sites for further exploitation or phishing.

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/479516143/how-to-make-a-free-server-in-minecraft-java-game-hack PDF link annotation
    • http://perpus.stmik-im.ac.id/repository/minecraft-114-4-download_GM479516143.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-hack-a-roblox-chat_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/aimbot-exe-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/game-give-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-hack-roblox-with-cheat-engine-651_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/bux-gg-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-roblox-water-bottle-labels_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-vehihicle-simulaot-hacks_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-rpg-hack_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-free-spins-2021-hack_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-get-rid-of-a-hacker-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-noclip-hack-download-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-coin-master-account_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-script-executor-free_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-robux-nicsterv_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/best-free-catalog-items-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-generate-free-coin-master-spin_GM406889139.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_off00002ed5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ED5 21548 bytes
SHA-256: 44e7892919ce80f8c001acabb81cd2bf6ce5a2f151da73e6681f1b595ac0fad2
font_01_sfnt_off00005df6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF6 18612 bytes
SHA-256: 555b24b756bcd603c13deabf026a5503f931b2eac608976c8f18f7c8971c117d

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