Malicious PDF — malware analysis report

Static analysis result for SHA-256 639f3594a4fa5aee…

MALICIOUS

PDF

45.5 KB Created: 2021-06-03 10:08:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8d784d5df6042dac73234db8670b6124 SHA-1: 56bbc269b975f1a72cab781152ee8a9354e310b6 SHA-256: 639f3594a4fa5aee90458452989e14c0d2a57c22c916061ee2f3e10aaad853a2
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 0.9864

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-without-offers-game-hack PDF link annotation
    • http://digilib-unirow.ac.id/repository/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-hacks-no-human-verification_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/free-modded-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/rbx-free_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/minecraft-svg-free_GM479516143.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/get-free-spins-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/get-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/how-to-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/download-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/how-to-get-free-tiktok-followers-without-verification_GM835599320.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/free-spin-codes-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/free-spins-coin-master-legit_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/minecraft-skins-download-free_GM479516143.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/no-human-verification-hack-for-coin-master_GM406889139.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005456.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5456 25424 bytes
SHA-256: e5e7928a2cb807356dfc39b0f6a24fff7967fe1793968624dc2e5b3c4cea9cfe
font_01_sfnt_off00008e40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E40 18600 bytes
SHA-256: aefc65dd28f007a3f9b16d2e7d3f040b6593358131967176ac90892bab7f0013

Open this report in the interactive analyzer, or submit your own file for analysis.