Malicious PDF — malware analysis report

Static analysis result for SHA-256 782312d64ef456fc…

MALICIOUS

PDF

34.8 KB Created: 2021-07-04 10:49:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 2b9ae754520c62c69782734f98df4f55 SHA-1: a9d240c509356580c447364c5e0441bfef823916 SHA-256: 782312d64ef456fceff8d5e2dec2342a3e325f7667fcbc5be8baf9ab31065b98
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/479516143/minecraft-build-hacks-game-hack PDF link annotation
    • https://www.e-starmagazine.com/uploads/files/minecraft-packs-free_GM479516143.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/minecraft-windows-10-edition-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/roblox-hack-menu-ios_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/coin-master-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/coin-master-hack-app-android-download_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/how-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/how-to-install-minecraft-for-free-on-ios_GM479516143.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/hack-my-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/free-roblox-boy-hair_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/roblox-gang_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/games-that-give-u-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/pokemon-go-free-8-generation_GM1094591345.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/coin-master-game-hack-app-download_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/spin-rewards-coin-master_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/minecraft-java-edition-free-code_GM479516143.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/free-spins-coin-master-app_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_off00003195.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3195 22720 bytes
SHA-256: 4686836058d55e691d73861bf366ab74ae3f5036003187f4830cc5cc423e9c09
font_01_sfnt_off00006469.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6469 18628 bytes
SHA-256: a4fd7a8a6c31dcfbd5d524261ca24fbd66144d88575524e109ec8b87e7a5b6d6

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