Malicious PDF — malware analysis report

Static analysis result for SHA-256 81229142067c592e…

MALICIOUS

PDF

49.7 KB Created: 2021-06-03 14:41:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: dcbabd51d9443cce320831945b9f1e10 SHA-1: 17708408123d7b3c393509f5f65396536941aa7f SHA-256: 81229142067c592e09761cda332fca1560238d12a397a2834345d78b4ca5f9a0
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 0.9796

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 https://netcdn.online/app/431946152/free-robux-hack-game-hack PDF link annotation
    • http://digilibfisip.unla.ac.id/repository/robux-codes_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/tiktok-for-free_GM835599320.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-online_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/robux-com-free_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/robux-claimer_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-get-free-roblox-hair_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-link_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-website_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-daily-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-minecraft-skins-xbox-one_GM479516143.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-op-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/fb-coin-master_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-do-you-get-roblox-money_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000548c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x548C 28508 bytes
SHA-256: ff91139f49f20029753beb76bcab3da4ddd4fc12d8540b48fbb8fa67348cd96e
font_01_sfnt_off00009512.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9512 3000 bytes
SHA-256: 3817c499e37467a119dab1794db42e2d9db1d8abdf351bbe1c9033b1b79a8a35
font_02_sfnt_off00009f61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F61 18412 bytes
SHA-256: 8090616d8a5c0701bec53dfbbcc7430816d9db69864bd7c9067c717eb12c26b4

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