Malicious PDF — malware analysis report

Static analysis result for SHA-256 feb2b8dbd8b951c8…

MALICIOUS

PDF

35.2 KB Created: 2021-07-03 12:21:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: a346d044b3105c91c432ffdf5f224377 SHA-1: 034a1fefab2bc8449547102420d8633e40814daf SHA-256: feb2b8dbd8b951c82d7e0fe14d9718a078e6a6910f5bbe942d897f6a3140b9e7
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/406889139/coin-master-hack-2021-ios-game-hack PDF link annotation
    • https://phy.itk.ac.id/asset/backend/upload/ckeditor/files/what-are-points-for-in-roblox_GM431946152.pdfIn PDF document text
    • https://phy.itk.ac.id/asset/backend/upload/ckeditor/files/minecraft-pe-hack-client-2021_GM479516143.pdfIn PDF document text
    • https://phy.itk.ac.id/asset/backend/upload/ckeditor/files/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • https://phy.itk.ac.id/asset/backend/upload/ckeditor/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://phy.itk.ac.id/asset/backend/upload/ckeditor/files/free-robux-2021-september-no-human-verification_GM431946152.pdfIn PDF document text
    • https://phy.itk.ac.id/asset/backend/upload/ckeditor/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • https://phy.itk.ac.id/asset/backend/upload/ckeditor/files/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://phy.itk.ac.id/asset/backend/upload/ckeditor/files/roblox-download-free-windows-10_GM431946152.pdfIn PDF document text
    • https://phy.itk.ac.id/asset/backend/upload/ckeditor/files/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • https://phy.itk.ac.id/asset/backend/upload/ckeditor/files/javascript-free-robux_GM431946152.pdfIn PDF document text
    • https://phy.itk.ac.id/asset/backend/upload/ckeditor/files/hack-menu-exploit-script-roblox_GM431946152.pdfIn PDF document text
    • https://phy.itk.ac.id/asset/backend/upload/ckeditor/files/coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • https://phy.itk.ac.id/asset/backend/upload/ckeditor/files/roblox-free-pants-solid-color_GM431946152.pdfIn PDF document text
    • https://phy.itk.ac.id/asset/backend/upload/ckeditor/files/cheat-codes-for-dungeon-quest-roblox_GM431946152.pdfIn PDF document text
    • https://phy.itk.ac.id/asset/backend/upload/ckeditor/files/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • https://phy.itk.ac.id/asset/backend/upload/ckeditor/files/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • https://phy.itk.ac.id/asset/backend/upload/ckeditor/files/free-roblox-hackingcom_GM431946152.pdfIn PDF document text
    • https://phy.itk.ac.id/asset/backend/upload/ckeditor/files/free-builders-club-code-roblox_GM431946152.pdfIn PDF document text
    • https://phy.itk.ac.id/asset/backend/upload/ckeditor/files/free-views-on-tiktok_GM835599320.pdfIn PDF document text
    • https://phy.itk.ac.id/asset/backend/upload/ckeditor/files/free-minecraft-servers-to-join_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_off000032f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32F5 22900 bytes
SHA-256: 350b44074c4d93546abcd4bdae82c604c5266e8196dfee2f4194497a2f1b013f
font_01_sfnt_off00006675.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6675 18408 bytes
SHA-256: e909f45242a9fd0be6739d7b47574e2ac84d9da9f41b4bb4c7d450081742910c

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