Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cbcd7873bea3b73…

MALICIOUS

PDF

34.2 KB Created: 2021-07-06 17:42:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3340644d1bfd62fcb76099f42fd69710 SHA-1: 969ec11e46c6e8701190dad87cfb6055264bbaec SHA-256: 8cbcd7873bea3b73d2393988cd354663bc66ae80fbde40de16880efa6c2b6d8d
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 0.9980

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/cheat-engine-get-free-robux-game-hack PDF link annotation
    • http://www.pspmrsmmbk.com/cendana/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/how-to-get-free-stuff-on-roblox-catalog_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/roblox-counter-blox-cheats-crash_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/free-robux-hack-no-download-no-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/coin-master-free-cards-and-spin-link_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/free-gray-hair-accessories-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/hack-indir-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/hack-roblox-youtube_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/hack-version-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/raindrop-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/free-roblox-money-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/free-roblox-characters_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/how-to-fix-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/robux-free-co_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/daily-free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/free-roblox-executor_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/how-to-get-free-robux-on-computer-2021_GM431946152.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_off000030ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30AD 21972 bytes
SHA-256: 5b7d67d5dd957806bbd5c1d940a486f31b440d482f68b464068e53c02025f7f6
font_01_sfnt_off0000611b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x611B 18920 bytes
SHA-256: 2b91a604c82e3331ba20809ce1fd731236ac32ef21de93deda04dd6f61b1aefc

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