Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e33adaaabe56e41…

MALICIOUS

PDF

46.4 KB Created: 2021-05-12 11:09:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 11352710801b9ade1d5fb2d862029187 SHA-1: 56911a3e7dd6a4d7657019d1f8826ddc40768483 SHA-256: 4e33adaaabe56e4173e35b6af6dcf4f390a31ee629a297f8e26ec19ca00079d2
102 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 0.9977

Heuristics 5

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/how-to-get-free-robux-app-game-hack PDF link annotation
    • http://202.56.165.220/digilab/repository/coin-master-free-spins-today-daily-links_GM406889139.pdfPDF link annotation
    • http://202.56.165.220/digilab/repository/how-to-get-free-items-on-roblox_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/new-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/download-hacked-games-com-coin-master_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/get-robux-now_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/coin-master-mod-apk-hack_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/free-coin-master-credit_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/coin-master-free-spin-generator-without-human-verification_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/coin-master-free-download_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/coin-master-hack-unlimited-spins-apk_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/moonactive-free-spins_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/free-games-like-coin-master_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/minecraft-hacked-apk_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_003_off00004b9e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B9E 32444 bytes
SHA-256: 38c631fb97ad6e99b85ccff697661dcc645435d7ce9e8e0943c36eb49f0208f8
font_01_sfnt_off000092c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92C0 18460 bytes
SHA-256: 9b29575604d2c2a5900261a35c88052e604744084870fcd9fc708b4f32deccf1

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