Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4798d15b3994f1f…

MALICIOUS

PDF

42.9 KB Created: 2021-05-18 02:30:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 68660ba89c6544d207c3d7845cd2f667 SHA-1: 022d67642e80fb1cb146bbf6f59e68e721f08fb5 SHA-256: d4798d15b3994f1f219d2bf1c4a66040e60d4f1e4a49c6d04efdc6b63ded5b87
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 0.9971

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.xyz/app/431946152/free-robux-hack-game-hack PDF link annotation
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coinmaster-com_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/free-minecraft-website_GM479516143.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-coin-hack_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-homepage_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/free-spins-and-coins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-cards-for-free_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/minecraft-pe-free-download-ios_GM479516143.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/hack-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/get-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/does-coin-master-hack-work_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/archery-master-3d-hack-unlimited-coins-cheats_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/extra-free-spins-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
font_00_sfnt_off00004a9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A9A 25852 bytes
SHA-256: fb37cca138a7a68ab3eefa664b60849f68ba84833b954ef60bab1d842590f5c6
font_01_sfnt_off000084f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84F9 18412 bytes
SHA-256: 8090616d8a5c0701bec53dfbbcc7430816d9db69864bd7c9067c717eb12c26b4

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