Malicious PDF — malware analysis report

Static analysis result for SHA-256 f58b10333fc6d222…

MALICIOUS

PDF

43.0 KB Created: 2021-05-16 01:30:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ac8494ad7168f5b4267b566f10c85ac2 SHA-1: 8f259e5eb45bbd87be452e803462371a26d774c8 SHA-256: f58b10333fc6d22223c12d602d2d5b1e97ed5412a537fa9273684ef3e0064cbd
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 0.9971

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/coin-master-hack-tool-v1-9-download-free-game-hack PDF link annotation
    • https://ibelive.tw/image/data/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/how-do-u-get-robux_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/hack-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/try-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/how-to-get-free-unlimited-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/minecraft-free-download-mac-full-version-2021_GM479516143.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/100-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/roblox-source_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/free-roblox-groups_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/coin-master-download_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/how-to-get-minecraft-for-free-on-mobile_GM479516143.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/aimbot-download-roblox_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/get-free-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/hacks-minecraft_GM479516143.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/free-roblox-clothes-codes_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_off00004c1a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C1A 24448 bytes
SHA-256: f4eebbe778a315de8d33b01688bbf34f9d1c67c9ee62fbf84a16e0eea2cf86d0
font_01_sfnt_off000083ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83EC 18864 bytes
SHA-256: f6546c931e30ebe5b0f44735796ae8f725f630439fc19eae70f9e7cc234a2321

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