Malicious PDF — malware analysis report

Static analysis result for SHA-256 baffbf52d4c022d3…

MALICIOUS

PDF

33.6 KB Created: 2021-07-06 08:19:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 9a81350020f2f1ef2785769356c1fa2d SHA-1: 9725ce9ad58c8f99db50ae85b92b44a15eb22d4f SHA-256: baffbf52d4c022d3b832036d86c77f3f28a29d99ecc9051ae0ee4dc4fb5dbb09
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/robux-get-com-game-hack PDF link annotation
    • http://digilib.stie-yppi.ac.id/repository/click-to-teleport-hack-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-lumber-tycoon-cheat-money_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-hack-100-working_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-net_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/april-fools-hack-roblox-wiki_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-get-loads-of-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/cr7-hack-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/hack-killerboyjuan123-in-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-hack-apk-no-fb-login_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/denis-free-robux-app_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-free-spins-2021-blogspot_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-roblox-card-codes-august-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/dayz-roblox-cheat-codes_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_off00002cab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CAB 22504 bytes
SHA-256: 46a05fcb2e80e2f70cf9f00e984d1269fac04f51fff472c7436b23ce035e4884
font_01_sfnt_off00005eaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EAA 18916 bytes
SHA-256: db1ada3a2550829089172039907c0d31a47922a9106dbd58a0f25c1be09f3418

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