Malicious PDF — malware analysis report

Static analysis result for SHA-256 72248f7113612072…

MALICIOUS

PDF

34.1 KB Created: 2021-06-29 02:59:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 514390a7a3edd8da90492f716a9e98f4 SHA-1: c0a8ced3fdf5dbcfafcf4ccc050d4abbd6988dde SHA-256: 72248f711361207224cc9783a332650915fb675a06e0b481655eb3d29e36dfee
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link disguised as a 'free generator / game hack' lure, which redirects to the URL http://netcdn.co/app/431946152/free-roblox-girl-hair-codes-game-hack. This URL is flagged as malicious and likely serves as a distribution point for malware or phishing content. The document body and heuristics strongly suggest a social engineering tactic to trick users into visiting a harmful site.

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.co/app/431946152/free-roblox-girl-hair-codes-game-hack PDF link annotation
    • https://www.vadai.sg/uploaded_files/userfiles/files/get-free-spins-coin-master-october-2021_GM406889139.pdfIn PDF document text
    • https://www.vadai.sg/uploaded_files/userfiles/files/pig-master-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • https://www.vadai.sg/uploaded_files/userfiles/files/chisel-and-bits-mod-pe_GM479516143.pdfIn PDF document text
    • https://www.vadai.sg/uploaded_files/userfiles/files/coin-master-hack-without-verify_GM406889139.pdfIn PDF document text
    • https://www.vadai.sg/uploaded_files/userfiles/files/get-free-robux-gamepasses-pastebin_GM431946152.pdfIn PDF document text
    • https://www.vadai.sg/uploaded_files/userfiles/files/free-robux-site_GM431946152.pdfIn PDF document text
    • https://www.vadai.sg/uploaded_files/userfiles/files/how-do-i-get-robux_GM431946152.pdfIn PDF document text
    • https://www.vadai.sg/uploaded_files/userfiles/files/minecraft-apk-free-download-016-0_GM479516143.pdfIn PDF document text
    • https://www.vadai.sg/uploaded_files/userfiles/files/how-to-get-any-item-for-free-robux_GM431946152.pdfIn PDF document text
    • https://www.vadai.sg/uploaded_files/userfiles/files/free-magical-chest-coin-master_GM406889139.pdfIn PDF document text
    • https://www.vadai.sg/uploaded_files/userfiles/files/free-followers-on-tiktok-no-verification_GM835599320.pdfIn PDF document text
    • https://www.vadai.sg/uploaded_files/userfiles/files/free-robux-co_GM431946152.pdfIn PDF document text
    • https://www.vadai.sg/uploaded_files/userfiles/files/minecraft-iphone-free_GM479516143.pdfIn PDF document text
    • https://www.vadai.sg/uploaded_files/userfiles/files/coin-master-daily-link_GM406889139.pdfIn PDF document text
    • https://www.vadai.sg/uploaded_files/userfiles/files/roblox-download-free-chrome_GM431946152.pdfIn PDF document text
    • https://www.vadai.sg/uploaded_files/userfiles/files/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • https://www.vadai.sg/uploaded_files/userfiles/files/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • https://www.vadai.sg/uploaded_files/userfiles/files/roblox-how-create-a-hacking-place_GM431946152.pdfIn PDF document text
    • https://www.vadai.sg/uploaded_files/userfiles/files/minecraft-creative-mode-free_GM479516143.pdfIn PDF document text
    • https://www.vadai.sg/uploaded_files/userfiles/files/free-robux_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_off00003045.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3045 21868 bytes
SHA-256: 1942458a41982a8c731a66919282b2713735b023507bb9f039b3a77de7e0efef
font_01_sfnt_off000060b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60B2 18944 bytes
SHA-256: c398ff13bd5b7201de2cf382afe5bbec560b3dc1fd1d1dc24cde97292bf6bf19