Malicious PDF — malware analysis report

Static analysis result for SHA-256 70f5f053aab7746d…

MALICIOUS

PDF

35.7 KB Created: 2021-07-07 03:46:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: f216ad7e26fe06310b2c515a6bfe87b4 SHA-1: 6abbf4e387cedae2866ede7909e77d1f0dc37fb7 SHA-256: 70f5f053aab7746d91312fcd77ee61cb92a7d03b898537a9f97a56c1fddd3b74
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-generator-no-survey-no-download-no-human-verification-game-hack PDF link annotation
    • https://edu.kyst.com.tw/image/data/files/backpack-roblox-free_GM431946152.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/minecraft-cheats-pc-2021_GM479516143.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/redeem-roblox-card-free_GM431946152.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/need-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/hack-coin-master-download_GM406889139.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/free-clothes-catalog-roblox_GM431946152.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/freerobuxhack-us_GM431946152.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/how-to-get-free-unlimited-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/roblox-free-shirts-xxtentacion_GM431946152.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/roblox-free-dino-hat_GM431946152.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/coin-master-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/free-10-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/coin-master-hack-spin-generator-tool_GM406889139.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://edu.kyst.com.tw/image/data/files/coin-master-daily-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003305.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3305 21832 bytes
SHA-256: f826a7baac610ca56460fa49f4b92738a5d7e695a2d0927ad8121e35b5d8b6a2
font_01_sfnt_off00006339.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6339 20208 bytes
SHA-256: 0ef666815fca28e6c6cf3435968b0c81522e44f0a8d83e831ed265583d1f0e29

Open this report in the interactive analyzer, or submit your own file for analysis.