Malicious PDF — malware analysis report

Static analysis result for SHA-256 12aff01fc731178b…

MALICIOUS

PDF

34.8 KB Created: 2021-06-27 06:39:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3b5e63869e101ffd3482e2ea8d8284dc SHA-1: 9a7b3c437aea2cac69e5044572d4dea912139853 SHA-256: 12aff01fc731178ba5bda3c522ee2c09d8bf9092b38a14a2836124a3c7e861d8
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.co/app/431946152/how-to-get-free-robux-without-gift-cards-game-hack PDF link annotation
    • http://pustaka.bbppketindan.info//repository/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/roblox-comroblox_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-roblox-high-school-game_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-do-you-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/wurst-client-download_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-find-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/counter-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/collect-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-hack-roblox-accounts-2021-october_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-spins-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-robux-with-email_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-doom-cheat-codes_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-get-free-robux-online-no-survey_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/lots-of-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-hack-bid_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/get-roebucks-com_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/robux-survey_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/minecraft-hacked-client-bedrock_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
font_00_sfnt_off00002ffa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FFA 22256 bytes
SHA-256: 318b7b8d62eb2d83617a42c53de30a18f8cb0b348dad8902395b19caa7f1baaa
font_01_sfnt_off0000615e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x615E 19644 bytes
SHA-256: 69f1ea22c57778ad67fdd0d4e99d64374ff04791dbc4b76be1b2e6e7d6324bcf

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