Malicious PDF — malware analysis report

Static analysis result for SHA-256 d55698306bb682de…

MALICIOUS

PDF

34.9 KB Created: 2021-06-20 08:19:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 002b60915f38055b55227a869a44cfdf SHA-1: a1b509172663fa2ddbc7c9f3931fd9d83166e302 SHA-256: d55698306bb682de338a95fc1595fce24f6cc5694f891b2d172ff2dcd79c262c
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/roblox-cheat-codes-for-robux-2021-game-hack PDF link annotation
    • https://opac.heritagejkt.org//repository/roblox-free-followers_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-coin-master-links_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/pokemon-go-free-quiz_GM1094591345.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/how-to-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/coin-master-generator-free_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-roblox-robux-hack-generator-club_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/how-to-get-free-money-in-farm-world-roblox_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/how-to-make-your-own-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/coin-master-hack-september-2021_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-daily-free-spin-and-coin-link-haktuts_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-free-master_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-free-spin-bonus_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-hack-ios-jailbreak_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/minecraft-windows-10-key-free_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
stream_002_off00002ebb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2EBB 22708 bytes
SHA-256: 4686250a3a88f39fb010cc71fff618279550741cef3312a2877d10b42a29fb95
font_01_sfnt_off0000617a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x617A 19636 bytes
SHA-256: 959841620d78f7ed95fa05ee99e0e8be884222af7f76e37a037d566b3b75947a

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