Malicious PDF — malware analysis report

Static analysis result for SHA-256 45aa6433b064f871…

MALICIOUS

PDF

46.0 KB Created: 2021-05-19 11:01:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: f02dfc0bbdbd654716c942915c95981c SHA-1: 799a7f155d82445b3ea8000b7844734248c604b6 SHA-256: 45aa6433b064f871d04ee0252ee79b361cb3156d441b2eaf73b9c4a29a8311e0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure, advertising 'game hacks' and 'free generators' to entice users. It contains multiple embedded links pointing to external websites that likely host further malicious content or phishing pages. The ML classifier also flagged this PDF as malicious, increasing confidence in its malicious nature. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/479516143/minecraft-server-hacks-game-hack PDF link annotation
    • https://shimony.net/images/get-more-robux_GM431946152.pdfIn PDF document text
    • https://shimony.net/images/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • https://shimony.net/images/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • https://shimony.net/images/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • https://shimony.net/images/how-to-give-robux-on-mobile_GM431946152.pdfIn PDF document text
    • https://shimony.net/images/coin-master-free-spins-for-iphone_GM406889139.pdfIn PDF document text
    • https://shimony.net/images/coin-master-daily-gift-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://shimony.net/images/daily-coin-master-free-link_GM406889139.pdfIn PDF document text
    • https://shimony.net/images/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • https://shimony.net/images/coin-master-gold-cards-free-link_GM406889139.pdfIn PDF document text
    • https://shimony.net/images/coin-master-hack-mobile_GM406889139.pdfIn PDF document text
    • https://shimony.net/images/hack-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • https://shimony.net/images/coin-master-hack-blogspot_GM406889139.pdfIn PDF document text
    • https://shimony.net/images/pubg-8-uc_GM1330123889.pdfIn PDF document text
    • https://shimony.net/images/minecraft-mobile-free_GM479516143.pdfIn PDF document text
    • https://shimony.net/images/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • https://shimony.net/images/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • https://shimony.net/images/coin-master-games-hack_GM406889139.pdfIn PDF document text
    • https://shimony.net/images/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • https://shimony.net/images/free-robux-now_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_off00004b51.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B51 26912 bytes
SHA-256: 77b47050d8134bd37a1f93a851f8f59048b106b43c7a6e6bb0b7674d62ff7956
font_01_sfnt_off00008895.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8895 2976 bytes
SHA-256: f01acc160ef1393137cd7a90315dbabef2de3b2672caff7b486b43975190684a
font_02_sfnt_off000092d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92D3 17852 bytes
SHA-256: d08e9f99218473ecffc4f3e4fddc043c571e48cf04331ee5ff23a4dc6866f563

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