Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd6563a03c7d304a…

MALICIOUS

PDF

34.5 KB Created: 2021-07-06 17:29:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 5499db8c94285a978f66ad3fc365ddea SHA-1: cf742311c97cfb1248ea18f6302d7b1024d109f4 SHA-256: fd6563a03c7d304a0e3f1257b1b2f53248efae0f535db9c53673cad59c058009
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains heuristics indicating it links to a 'free generator / game hack' redirector, specifically http://netcdn.tw/app/431946152/only-free-robux-game-hack. The document body reinforces this by mentioning 'Only Free Robux' and embedding the same URL. This suggests a social engineering lure to trick users into visiting a potentially malicious site, likely for credential harvesting or malware distribution.

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/431946152/only-free-robux-game-hack PDF link annotation
    • https://fridaytravelnepal.com/userfiles/files/mcpe-master-coins-hack_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-free-spins-generator-no-human-verification_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-code-roblox-2021_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-get-free-skins-in-roblox_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-offers_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/junio-2021-hack-robux-en-roblox_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/gamehunters-coin-master_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-legit_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/minecraft-free-download-mobile_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-games-download-free_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-do-u-speed-hack-on-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-free-coins-links-2021_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-tool-credit-card-cheat_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_off00003155.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3155 22216 bytes
SHA-256: a4c1a4f140b87cf6b9266c17b2273c32f0f6fcd33748f7743a9d30196689cc0f
font_01_sfnt_off00006263.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6263 18784 bytes
SHA-256: ca31aff8c758afbdfbb74e16310741621686f5d196f32a88ca9204bb8f8f9708

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