Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fade92b29ef66fc…

MALICIOUS

PDF

41.2 KB Created: 2021-05-20 00:00:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: cdbc72bdcb9bb868ada11fb4db8c9a41 SHA-1: d4819b29610b84378aa00301a1f2208ab472d592 SHA-256: 3fade92b29ef66fcb2f554516f39d68700f521eff1044fc5b94040f936ae67d4
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/431946152/robux-fun-hack-game-hack PDF link annotation
    • http://www.dciprotection.ca/images/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.dciprotection.ca/images/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://www.dciprotection.ca/images/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://www.dciprotection.ca/images/minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://www.dciprotection.ca/images/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://www.dciprotection.ca/images/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://www.dciprotection.ca/images/pokemon-go-free-wallhack_GM1094591345.pdfIn PDF document text
    • http://www.dciprotection.ca/images/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://www.dciprotection.ca/images/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • http://www.dciprotection.ca/images/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://www.dciprotection.ca/images/coin-master-official-fan-page_GM406889139.pdfIn PDF document text
    • http://www.dciprotection.ca/images/roblox-cheat-robux_GM431946152.pdfIn PDF document text
    • http://www.dciprotection.ca/images/block-best-robux_GM431946152.pdfIn PDF document text
    • http://www.dciprotection.ca/images/roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.dciprotection.ca/images/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://www.dciprotection.ca/images/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://www.dciprotection.ca/images/free-gifts-coin-master_GM406889139.pdfIn PDF document text
    • http://www.dciprotection.ca/images/coin-master-free-rewards-link_GM406889139.pdfIn PDF document text
    • http://www.dciprotection.ca/images/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://www.dciprotection.ca/images/coin-master-free-coins-link-2021_GM406889139.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_off0000485f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x485F 23892 bytes
SHA-256: 9e412c160333e1f45404cf9e92d7f95c6d0fa0ef538457b718f2f4df2ccfc721
font_01_sfnt_off00007e3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E3E 18412 bytes
SHA-256: 5f8acd8ad37749349105b070ed73c2c3c7a96b7e2283405d761bfe738e73485c

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