Malicious PDF — malware analysis report

Static analysis result for SHA-256 2960de30c1600bdd…

MALICIOUS

PDF

34.3 KB Created: 2021-06-20 05:41:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: fc6220b7dd8e5db76b967996f8ffbbb2 SHA-1: da4091aaaff3d84541185f4f96264deb76476cd8 SHA-256: 2960de30c1600bdd8df376f05bf6ba0c75378ea6383d4f6e42a0b113a5b06d20
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/406889139/free-coin-master-coins-game-hack PDF link annotation
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/free-roblox-girl-hair-not-a-model_GM431946152.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/coin-master-daily-link_GM406889139.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/links-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/roblox-free-redeem_GM431946152.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/hackear-coin-master-android_GM406889139.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/free-roblox-generator_GM431946152.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/how-do-you-hack-for-2021000-coins-on-flip-master_GM406889139.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/free-card-collection-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/toolbox-for-minecraft_GM479516143.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/do-robux-generators-work_GM431946152.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/robux-page_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_002_off0000310f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x310F 22836 bytes
SHA-256: 9596c5c03ba100c660527ef87614fa994ddaf7a0e4440abfc6f3abcc473fc0da
font_01_sfnt_off00006443.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6443 17996 bytes
SHA-256: e3fb1ca426c01543f38f1d1129ae452bef28a40365fbe99abf1b239340e30419

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