Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef608d31302aece1…

MALICIOUS

PDF

47.4 KB Created: 2021-06-03 15:59:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: aae6fd004d7103849b6f9bbf2d735b1d SHA-1: 137ea96cd5f958286b5f70c5de15f50c6c45a210 SHA-256: ef608d31302aece1a37dee88d919508418087ee68889e99211f47cbae96c160a
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 0.9832

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/websites-to-get-free-robux-game-hack PDF link annotation
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/coin-master-pc-hack_GM406889139.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/free-modded-minecraft-server_GM479516143.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/gaming-dunia-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/100-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/facebook-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/coin-master-free-100-spin_GM406889139.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/is-pokemon-go-a-free-app_GM1094591345.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/spin-rewards-coin-master_GM406889139.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/free-robux-place_GM431946152.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/free-spins-on-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/robux-game-com_GM431946152.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/free-op-minecraft-servers_GM479516143.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/wurst-commands_GM479516143.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/free-role-in-coin-master_GM406889139.pdfIn PDF document text
    • https://learning.man3blitar.my.id/__statics/gudangsoal/files/free-minecraft-hacks_GM479516143.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_off00005484.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5484 28924 bytes
SHA-256: 7811cb9120bd96a2b7225feaff1da4b84dfa12cf2271cc2cff37e93342ff3002
font_01_sfnt_off0000969d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x969D 18436 bytes
SHA-256: 6ab9ab31980840835fbaeca164a74f0e8188db39a6ce5c5e4face3e95ba0b523

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