Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca032b3beca7adfa…

MALICIOUS

PDF

34.2 KB Created: 2021-07-04 12:10:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 2af539fe2b409732e59624d23b73db31 SHA-1: 912b59a83385fd2888f54ad142bc2d6a93ec8ef9 SHA-256: ca032b3beca7adfa83ceb9a3a91c7d464264bb5122c05c53a91924bd04309299
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/431946152/free-robux-ad-game-hack PDF link annotation
    • https://ibelive.tw/image/data/files/coin-master-extra-spins_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/how-do-you-get-free-robux-easily_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/how-to-make-a-roblox-hack-script_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/free-robux-pastebin-may_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/fb-coin-master_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/how-to-hack-almost-any-game-roblox_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/free-minecraft-skins-ps4_GM479516143.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/pubg-uc-uk_GM1330123889.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/avatar-the-last-airbender-roblox_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/free-robux-site_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/clean-master-hack-coins_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/how-to-get-robux_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
font_00_sfnt_off00002e2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E2B 22644 bytes
SHA-256: 0cb3c4fc139ab0a8615306489f56b85fdf94efcfa0798412af0304f84bdde1a3
font_01_sfnt_off000060d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D8 18888 bytes
SHA-256: fed93a57f9ebc49998933260645548d38829a68d40f64c31f5643833283864c8

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