Malicious PDF — malware analysis report

Static analysis result for SHA-256 a66aabcf5003f29d…

MALICIOUS

PDF

34.6 KB Created: 2021-06-27 00:35:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c6494b2e51605453be7efc5da53f2321 SHA-1: f1ea278dfb969c75a9031f4e0bcc7c012957101a SHA-256: a66aabcf5003f29dc4c0873d8afed4c922dfc76c7769ba496c62e141c56743f5
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.co/app/431946152/how-do-doload-hacks-in-roblox-game-hack PDF link annotation
    • http://digilibfisip.unla.ac.id/repository/toolbox-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/como-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-get-2021-robux-on-roblox-free-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-clothes_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/hack-i-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/have-i-been-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/hack-de-robux-100-real-no-fake_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-accessories-in-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coinmaster-twitter_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/claim-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-spin-hack-app_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-auto-clicker-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-spins-coin-master-unlimited_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_off00002e90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E90 22732 bytes
SHA-256: ed064f3f8d17178ce5d578b9094fcb303fcaafbf9f67e7bc3249a29f30194691
font_01_sfnt_off000061ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61AC 19160 bytes
SHA-256: 4f61ccde5db9c11fcafee05366b748016edc54dec8a0c1a1d745bcf23db8e124

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