Malicious PDF — malware analysis report

Static analysis result for SHA-256 3364bcc2a39f3241…

MALICIOUS

PDF

44.7 KB Created: 2021-06-03 12:11:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: a4c7e92d657339a6ffb5e1e1dd1a34b7 SHA-1: 01d471f30bb62917540a51c510223c7dd654264a SHA-256: 3364bcc2a39f3241f46f833809b9e17b5278622905fbb1d05783dea5f1ea4538
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 0.9865

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/bc-roblox-free-game-hack PDF link annotation
    • http://opac.pps.uin-alauddin.ac.id/repository/coin-master-hack-co_GM406889139.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/coin-master-free-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/how-to-download-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/coin-master-34-5-hack_GM406889139.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/coin-master-hack-club_GM406889139.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/coin-master-mod-version-free-download_GM406889139.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/minecraft-java-edition-free-download-for-android_GM479516143.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/regal-world-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/free-roblox-followers_GM431946152.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/hack-minecraft_GM479516143.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/free-spins-and-coins-for-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_004_off00005049.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5049 27912 bytes
SHA-256: c8b7e6d61db8e158e38feff354e27c7a244723a111d6b0b042a8e7ce39cbc4b4
font_01_sfnt_off00008d0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D0B 17948 bytes
SHA-256: 4d33622b659a2516cabe18b0067c5e14bd2b930ae70e76844dd51e3fdddef575

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