Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa06e579177d65c3…

MALICIOUS

PDF

33.7 KB Created: 2021-07-04 02:40:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: dbaf495f6bff1f5c369f5cc2cb10750d SHA-1: ac85fc0ed9ca0a04985635a273765b179017a3c6 SHA-256: fa06e579177d65c3f5ca0dcd6eb0855cbe286a0e7440cdbdb6561b26c3b46019
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file 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 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/835599320/free-tiktok-likes-without-verification-game-hack PDF link annotation
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-get-a-free-home-on-roblox-on-rocitixens_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/money-cheat-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-get-free-robux-without-downloading-app_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-robux-with-proof-2021_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-robux-and-tix-place_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-fans-on-tiktok_GM835599320.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-accessories-in-roblox-codes_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-games-free_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/coin-master-hack-tool-no-human-verification_GM406889139.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/rthe-wild-west-roblox-when-is-going-to-be-free_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-free-models_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/tiktok-followers-generator-free_GM835599320.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-builders-club-free-codes_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-get-any-clothes-on-roblox-for-free_GM431946152.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_off00002f6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F6D 21956 bytes
SHA-256: b30f880bebb9d3ec236a5080e550e9f838fe15b642f988ca89a28aa5e5bfd664
font_01_sfnt_off00006018.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6018 18608 bytes
SHA-256: 63367279bd11c980c9eaf9f35992ba11542a10119b2b4702eff517e725b503c5

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