Malicious PDF — malware analysis report

Static analysis result for SHA-256 8493d80348499f1c…

MALICIOUS

PDF

34.6 KB Created: 2021-07-08 10:00:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: ffa53b0d04a1fde04415ef2e6a2b2a0e SHA-1: 28dc80581d794aa08cb534ce8dd8e9223be77bc5 SHA-256: 8493d80348499f1c00d3fc107f8a0c78f08f9c9c8d55254821c1f1483d40070c
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-role-in-coin-master-game-hack PDF link annotation
    • https://sitecontabil.com.br/ckfinder/userfiles/files/free-robux-give-away-everyone-will-get-robux-proof_GM431946152.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/minecraft-windows-10-edition-free-with-java_GM479516143.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/coin-master-cheat-free_GM406889139.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/minecraft-online-free-no-download_GM479516143.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/give-me-robux-now_GM431946152.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/free-roblox-clothes-mobile_GM431946152.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/free-robux-no-human-veriy_GM431946152.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/coin-master-hack-tool-v1-9-apk_GM406889139.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/impact-roblox-hack_GM431946152.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/ulgamesresourcescom-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/como-usar-cheat-engine-67-no-roblox_GM431946152.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/script-hack-for-roblox_GM431946152.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/de-robux-hack_GM431946152.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
stream_002_off00003183.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3183 23084 bytes
SHA-256: 9612cc7f4bdc6d509ee2bb2003a0e155bb8456131b5e810a372b00c3abf5ff78
font_01_sfnt_off00006583.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6583 18072 bytes
SHA-256: b51d2cd8f3a2b2ab778bd1d4ef698f8fe12f93fad8d5b53ad600fdb8a6c5eb0e

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