Malicious PDF — malware analysis report

Static analysis result for SHA-256 067031e258a17abe…

MALICIOUS

PDF

42.9 KB Created: 2021-05-19 10:41:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: c9335b552b05ffe886e84d15651986c3 SHA-1: b7bad91059fdcca6990057f111280141d203ebbf SHA-256: 067031e258a17abe7e7c1127448462d5705ed9f646c5fe2f36a5a595e25b9eb5
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 0.9630

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/406889139/free-coins-coin-master-link-today-game-hack PDF link annotation
    • http://medinup.pt/images/coin-master-free-spin-reward-links_GM406889139.pdfIn PDF document text
    • http://medinup.pt/images/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://medinup.pt/images/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • http://medinup.pt/images/claim-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://medinup.pt/images/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
    • http://medinup.pt/images/minecraft-rtx-download-free_GM479516143.pdfIn PDF document text
    • http://medinup.pt/images/free-roblox-hair-girl_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/free-spins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://medinup.pt/images/hack-robux_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/how-to-get-free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/how-to-get-java-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://medinup.pt/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://medinup.pt/images/free-account-roblox-2021_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/40-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://medinup.pt/images/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://medinup.pt/images/how-to-change-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/roblox-source_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000042dd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x42DD 24040 bytes
SHA-256: 4b4df6ec84f57360a074b1a9faa1e079e9695691aa64cde3e874e9727df5c587
font_01_sfnt_off00007930.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7930 3380 bytes
SHA-256: 1dd933c112880b232546f3aab6a17784a8f412d39fd551cc6eb31c5a04c3ce57
font_02_sfnt_off00008518.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8518 18232 bytes
SHA-256: 919e3931629c19f2cd0ae6f6c09285b8d44d14b54c37a6bb98ea3e4a7cef2171

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