Malicious PDF — malware analysis report

Static analysis result for SHA-256 50b98d165bb70380…

MALICIOUS

PDF

33.1 KB Created: 2021-06-20 19:03:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c0265039b67ee4a7a138ef35affe507b SHA-1: d2e4f303546e0a08dfec5c7dabd37b88f05f2aae SHA-256: 50b98d165bb70380aa8bd562a04955312573a73a36682797e2a632d87aa3ade6
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 0.9824

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.co/app/431946152/http-roblox-cheat-net-game-hack PDF link annotation
    • https://knowledgekingdom.com.jo/aidata/blanc/files/free-100-robux_GM431946152.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/coin-master-spin-hack-pc_GM406889139.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/coinmaster-free-cards_GM406889139.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/free-good-account-on-roblox_GM431946152.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/minecraft-book-collection_GM479516143.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/minecraft-ore-finder-mod_GM479516143.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/tiktok-free-credit-card_GM835599320.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/fighting-free-card-coin-master_GM406889139.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/free-spins-promo-code-for-coin-master_GM406889139.pdfIn PDF document text
    • https://knowledgekingdom.com.jo/aidata/blanc/files/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.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_off00002baf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BAF 22168 bytes
SHA-256: 03532f999f2d1856418a19e9b2263b1875a27b78f32a943eeeaa0f78b8019751
font_01_sfnt_off00005cc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC1 18932 bytes
SHA-256: 954c6581f382a9773e6fd61096403d9a5990db7765b91165e69f8061958e4ef3

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