Malicious PDF — malware analysis report

Static analysis result for SHA-256 68c89218cadf6749…

MALICIOUS

PDF

33.5 KB Created: 2021-07-03 16:46:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5822e51f819d6d0a3b1506e7686ebe8e SHA-1: fd0cb68b6e7689fc2cbf9d8cb157a991ba3234d8 SHA-256: 68c89218cadf67492f5431ce84579ee76517659bd1dae2a898c5742f3d163b3f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a lure for game hacks and free currency, directing users to a malicious redirector URL. This redirector, in turn, hosts multiple other PDFs, suggesting a chain of malicious content delivery. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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
  • 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/adopt-me-roblox-hacks-game-hack In PDF document text
    • https://vireco.store/ckfinder/userfiles/files/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • https://vireco.store/ckfinder/userfiles/files/roblox-royale-high-hack-2021_GM431946152.pdfIn PDF document text
    • https://vireco.store/ckfinder/userfiles/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://vireco.store/ckfinder/userfiles/files/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • https://vireco.store/ckfinder/userfiles/files/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • https://vireco.store/ckfinder/userfiles/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://vireco.store/ckfinder/userfiles/files/get-free-tiktok-followers-no-verification_GM835599320.pdfIn PDF document text
    • https://vireco.store/ckfinder/userfiles/files/games-for-robux_GM431946152.pdfIn PDF document text
    • https://vireco.store/ckfinder/userfiles/files/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://vireco.store/ckfinder/userfiles/files/roblox-gift-card-free-no-human-very-or-survey-youtube_GM431946152.pdfIn PDF document text
    • https://vireco.store/ckfinder/userfiles/files/hack-the-plaza-beta-on-roblox_GM431946152.pdfIn PDF document text
    • https://vireco.store/ckfinder/userfiles/files/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://vireco.store/ckfinder/userfiles/files/how-to-hack-roblox-for-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://vireco.store/ckfinder/userfiles/files/minecraft-handbook_GM479516143.pdfIn PDF document text
    • https://vireco.store/ckfinder/userfiles/files/facebook-coin-master_GM406889139.pdfIn PDF document text
    • https://vireco.store/ckfinder/userfiles/files/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • https://vireco.store/ckfinder/userfiles/files/free-robux-com_GM431946152.pdfIn PDF document text
    • https://vireco.store/ckfinder/userfiles/files/roblox-demo-free-download_GM431946152.pdfIn PDF document text
    • https://vireco.store/ckfinder/userfiles/files/roblox-patched-hacks_GM431946152.pdfIn PDF document text
    • https://vireco.store/ckfinder/userfiles/files/roblox-how-to-hack-accounts-2021_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
font_00_sfnt_off00002d5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D5A 21672 bytes
SHA-256: ec3984b321115b29f773fb06e51ffe4600f95e12b202dd5521b0e5c3c375e295
font_01_sfnt_off00005cef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CEF 19308 bytes
SHA-256: 22934774863ac3be514f624650c183b4034f40a3033292b7237229c7ea0ab873

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