Malicious PDF — malware analysis report

Static analysis result for SHA-256 15b6fbc7f6e496ad…

MALICIOUS

PDF

32.0 KB Created: 2021-05-17 20:35:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 313425b37a3688339bc23805a7b660be SHA-1: 33cd45369da7b27c1b71fbb916fbf7f2673bd276 SHA-256: 15b6fbc7f6e496ad5c8968311b7d3c78fbbae349c03698dd6d56354be3da13c4
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to external websites, including a known malicious redirector infrastructure. The document body and embedded links suggest a lure for free game currency or hacks, which is a common social engineering tactic. The presence of embedded URLs and the nature of the lures indicate an attempt to direct the user to potentially malicious content or further stages of an attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 3

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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/406889139/coin-master-free-spins-link-2021-blogger-game-hack In PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/how-to-download-minecraft-for-free-on-windows-10_GM479516143.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/how-to-block-someone-on-coin-master_GM406889139.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/coin-master-links-for-free-spins_GM406889139.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/coin-master-cards-free_GM406889139.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/roblox-avatar-tester_GM431946152.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/can-i-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/free-robux-just-click_GM431946152.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/what-is-exploiting-in-roblox_GM431946152.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/roblox-a_GM431946152.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/minecraft-switch-free_GM479516143.pdfIn PDF document text
    • https://klinikdentalestetic.com/ckfinder/userfiles/files/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ce1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CE1 24752 bytes
SHA-256: fee7179fa754bae07124620996a14ef9d33f3ec8e8d8174c2f622e739baa3d77