Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ea6ea835f5c06d7…

MALICIOUS

PDF

36.0 KB Created: 2021-07-05 15:19:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: dbc61fd7f4c1cdbe61ccff4f30a7d84a SHA-1: 4c5b13b8218a73f5cada161ce0a2bf36f047333d SHA-256: 9ea6ea835f5c06d7c6346de4f69583daf89f323a835f25cb5edd3125d9efa3d1
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 0.9980

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 http://netcdn.tw/app/431946152/how-to-get-free-robux-without-verifying-game-hack PDF link annotation
    • http://www.pspmrsmmbk.com/cendana/repository/coin-master-tricks-and-hacks_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/hack-coin-master-343-apk_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/how-to-change-roblox-name-for-free_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/how-to-hack-robux-javascript-pastebin_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/http-coin-master-hack-club_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/game-toolbox_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/cheat-engine-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/how-can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/free-roblox-pats-girl_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/minecraft-maps-pe-free-download_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/red-kine-cheat-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/how-do-i-get-robux-for-free-but-i_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/how-to-get-minecraft-for-free-on-ps4-2021_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/coin-master-hack-for-android_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_002_off00003193.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3193 23100 bytes
SHA-256: 538af4fd66706cff36fea44020749f48f726d156cc79b506fe6b86cec0b4686a
font_01_sfnt_off00006570.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6570 19780 bytes
SHA-256: b9c7d84263575e510e678fcc2eb85effd7bc843621a598683d3ec713f50ed6b3

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