Malicious PDF — malware analysis report

Static analysis result for SHA-256 d231befa2c6060a2…

MALICIOUS

PDF

44.0 KB Created: 2021-05-11 22:15:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 5604e1e52c7aa9a1a0029a7b6e569533 SHA-1: ac19ad99365edbc5419363819dfd0748eb9f5c71 SHA-256: d231befa2c6060a20e868a6d59a4daa1ed60314fe9771da0a49ff7e293a1be4a
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 0.9969

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-pe-hacks-2021-game-hack PDF link annotation
    • http://learningarabic.co.uk/images/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/coin-master-free-spins-daily-link-updated_GM406889139.pdfIn PDF document text
    • http://learningarabic.co.uk/images/coin-master-free-spins-link-without-human-verification_GM406889139.pdfIn PDF document text
    • http://learningarabic.co.uk/images/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • http://learningarabic.co.uk/images/how-do-you-get-robux_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/coin-master-unlimited-spin-apk-free-download_GM406889139.pdfIn PDF document text
    • http://learningarabic.co.uk/images/freegames911com-coinmastertipsandcheats2021freecoinsandspins_GM406889139.pdfIn PDF document text
    • http://learningarabic.co.uk/images/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/roblox-avatar-editor-free_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/apk-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://learningarabic.co.uk/images/redeem-roblox-card-free_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://learningarabic.co.uk/images/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • http://learningarabic.co.uk/images/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://learningarabic.co.uk/images/coin-master-map_GM406889139.pdfIn PDF document text
    • http://learningarabic.co.uk/images/get-free-robux-no-human-verification_GM431946152.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_off00004e86.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E86 26068 bytes
SHA-256: a11baae9764b359a4331d2f43a46bf57cfc530d9dff419de5cfc44c42f21dbfd
font_01_sfnt_off000089dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89DD 18296 bytes
SHA-256: 928fda8d6cdf740c8aa958f6e9db818f0cdae9318cc1084247adea2ad4ad4e6f

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