Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a6503ea1a2f114f…

MALICIOUS

PDF

34.6 KB Created: 2021-07-04 02:18:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c28d9ea0f04251ef2f398d7e345a8245 SHA-1: 12147800d95589df7f6f7d145abf45db5fdae853 SHA-256: 8a6503ea1a2f114fc0e4f1f864622e80b83c9f8bbfdce5a73f2ef88f6b7a8777
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.tw/app/406889139/free-coin-master-gifts-game-hack PDF link annotation
    • https://ibelive.com.tw/image/data/files/how-to-glitch-and-get-free-robux_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/robux-hack-youtubecom_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/coin-master-shield-hack_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-robux-with-console_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/roblox-vouchers-free_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-robux-real_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/cmo-hackear-roblox-2021_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/send-me-500-2021-spins_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/pokemon-go-free-incense-promo-code_GM1094591345.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-robux-no-verification-no-download-2021_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_off000030cb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30CB 23384 bytes
SHA-256: 5637b4034ef1779173552a21f91478b38ce370943bd2341cbf12bb46185f8d28
font_01_sfnt_off00006568.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6568 17996 bytes
SHA-256: 31c8390ee7425a61582bf1a3318a39ea3c852a35fdf2b8b3171b800f7f9ccbac

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