Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0847f98b8f4f1ab…

MALICIOUS

PDF

35.0 KB Created: 2021-06-19 06:58:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 2a23d505526d807ba15207f5812a85af SHA-1: dd4ebe845307c80926028da2a3ba286190c1d044 SHA-256: a0847f98b8f4f1ab2d82648b9fbd5db3157aa2bee97f840a1174f92cee49d80e
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/dbaf-hacked-roblox-game-hack PDF link annotation
    • http://www.stttekstil.ac.id/elib/repository/pokemon-go-free-android-download_GM1094591345.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-robux-cheats-card-codes_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/course-obstacle-2021-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-robux-apk-2021_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/dio-roblox-free-shop-t-schirts_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/how-to-get-free-robux-on-ipad-2021-easy_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/minecraft-free-minecraft_GM479516143.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/how-to-get-roblox-hacks-on-mac_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/coin-master-free-spin-link-today-download_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-hack-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/hack-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/robux-hacks-no-verification-2021-computer_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/its-free-roblox-meme_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/robux-free-robux_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-robux-earn_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-robux-kid-friendly_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_off00002ffd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FFD 23264 bytes
SHA-256: 85da1e28abca6faa21f81f1e0684f7586810f121b75b6d7d7ff6ff37feecbf0a
font_01_sfnt_off000063a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63A1 19000 bytes
SHA-256: d6ce3f97bc993c8ea738f555117604a35fbf7f93c7e340a102c44c8625a3d34d

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