Malicious PDF — malware analysis report

Static analysis result for SHA-256 468e214a87f8495d…

MALICIOUS

PDF

34.2 KB Created: 2021-07-05 09:12:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 277c4ba8aac655c1e1b75762e58c57a9 SHA-1: ab27ba4cf35998f4b97712857ddc9d13fe06cbf1 SHA-256: 468e214a87f8495db96387d4087c4df8075f7b52e866e2c06d3bcbc4bf9d8c0a
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/406889139/coin-master-cheats-game-hack PDF link annotation
    • https://opac.umrah.ac.id/repository/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/conquerors-hack-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/pokemon-go-fest-free-tickets_GM1094591345.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-clothes-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/e-free-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-hack-peoples-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/power-games-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/http-bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/get-my-hacked-roblox-account-back_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-promo-codes-august-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/10-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-speed-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-hacker-com_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/cheat-codes-for-roblox-pumpkin-carving-simulator_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/hack-to-get-free-spins-on-coin-master_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
stream_002_off000030b8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30B8 22720 bytes
SHA-256: 8f8c0d73cc2c209b75206283fe7830d859d1ca2df0cacd43c22cd3600f84ad06
font_01_sfnt_off000063d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63D2 18000 bytes
SHA-256: e4f2ba289b8f862341a17bae7a615844cde9b9cf7fcf4dfa818fc0510d6a909a

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