Malicious PDF — malware analysis report

Static analysis result for SHA-256 84a9c21c0e75f5e5…

MALICIOUS

PDF

40.0 KB Created: 2021-04-28 05:18:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ff486f715fbd535ea85dccde85fd9462 SHA-1: 11a65346d1f2a010ede7c5127924e75fa777d9ca SHA-256: 84a9c21c0e75f5e54513aec3b7f435a9ef8e5956c8972480250a934db683444d
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 0.9941

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 https://netcdn.xyz/app/431946152/hacks-for-roblox-apps-game-hack PDF link annotation
    • https://lib.stie-yai.ac.id/repository/site-17-hack-gui-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-prison-life-v2-0-cheats.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-without-verification-code.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/hack-ma-pin-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-go-through-walls-hack.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-hack-how-to-use-infinite-jump-we-are-devs.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-card-giver-roblox-jailbreak-2021.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-fames.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/get-robux-free-without-signing-up.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/best-way-to-hack-roblox.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003ff2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3FF2 25076 bytes
SHA-256: 80901c8509925f193b1f768a417883bec18a8745113e9b64d92ce28b1b406d85
font_01_sfnt_off000079cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79CD 18524 bytes
SHA-256: 2d58bd9329f004bdb082537ccb759a73d719cd582f80545a2175b4385babf076

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