Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4e6e9e219b87864…

MALICIOUS

PDF

35.1 KB Created: 2021-06-30 00:34:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: edbcd0a4f052f557ec45a183e082e06b SHA-1: 6a3d86dcdf781598b4d4605db100e9796edcd01e SHA-256: d4e6e9e219b87864928df88dbc3b316abe2d35d400bc12c03d649d89668c340e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including a known malicious redirector at http://netcdn.co/app/431946152/a-good-free-outfit-on-roblox-game-hack. These links are presented as lures for game hacks and free virtual currency, indicating a phishing or scam attempt. The presence of embedded URLs and a call-to-action button further supports this malicious workflow.

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/a-good-free-outfit-on-roblox-game-hack In PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/free-code-to-a-roblox-robux-reedeem-card_GM431946152.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/roblox-free-shirt-templates-download_GM431946152.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/roblox-the-streets-no-clip-hack_GM431946152.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/roblox-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/free-coin-master-gift-link_GM406889139.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/booga-booga-roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/hack-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/how-to-get-a-hacked-roblox-account-bac_GM431946152.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/run-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.kesambibaru.com/new/public/ckfinder/userfiles/files/how-to-noclip-in-roblox-cheat-engine-67-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000337e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x337E 21812 bytes
SHA-256: 0d24e27e64b00de51ea492945b538cee4892dc77f350861561840ac264ce708c
font_01_sfnt_off0000639e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x639E 19188 bytes
SHA-256: e5e5e34ab33caeb4f5e1389e115314a82040ce586010cca884948a064f33ea63