Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c227f1c25ed1955…

MALICIOUS

PDF

35.2 KB Created: 2021-06-19 16:23:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d3b4cfc6280853f429c519b8b8fa779e SHA-1: f56c36e3df689e105d07570231be89bac0ee64df SHA-256: 7c227f1c25ed19553c98450f16c6f2d31667b92cd4671e42a859b36a79b9c4e7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure for free game items and hacks, directing users to a known malicious redirector at http://netcdn.co/app/431946152/how-to-get-a-unicorn-in-adopt-me-roblox-hack-game-hack. The document contains numerous other links to potentially malicious PDF files hosted on cpsad.adturekorea.co.kr, suggesting a campaign distributing further malware or phishing content. The ML classifier strongly supports the malicious nature of this PDF.

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.co/app/431946152/how-to-get-a-unicorn-in-adopt-me-roblox-hack-game-hack In PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/earn-roblox_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/ww-roblox-come_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/minecraft-bedrock-edition-free-with-java_GM479516143.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/coin-master-free_GM406889139.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/codes-for-2021-november-for-free-robux_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/hack-coin-master-download_GM406889139.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/hackear-roblox-gratis_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/how-do-you-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/como-conseguir-robux-hack_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/how-many-villages-are-in-coin-master_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_off0000318d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x318D 22272 bytes
SHA-256: 08015eba837e91de9c709bbbad8b4663de7eaa621dd16c34b5b8efc22a4d0b03
font_01_sfnt_off000062f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F5 19592 bytes
SHA-256: a0f514f42405baaa8aacd280f177413d305067e3206faacde8e7734dd458b9fa

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