Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8ccbb2198e359bb…

MALICIOUS

PDF

35.8 KB Created: 2021-06-29 01:26:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 42a92034e6bc6269fa203eb4423f0345 SHA-1: 6d98b6ea865651fc9e7180227d261d389bdde6ec SHA-256: f8ccbb2198e359bb72360bc48138b9bd8fbdee4368f2ddb87a3c864c2494d530
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'Free Robux' and game hacks, directing users to external URLs. The presence of embedded URLs and the 'PDF_GAME_HACK_REDIRECT_LURE' heuristic strongly suggest a social engineering tactic to trick users into visiting malicious sites. While no scripts were explicitly extracted, the document's structure and embedded links indicate it serves as a delivery mechanism for potentially harmful content.

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-robux-map-game-hack PDF link annotation
    • http://bidship.co.za/uploaded_files/userfiles/files/foxy-hacks-com-roblox_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/can-i-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/new-speed-hack-roblox_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/adonis-hack-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/get-20210-robux-free_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/roblox-payment-exe-free-download_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/roblox-robux-hack-no-offers_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/how-to-get-free-robux-video-no-hacking_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/five-nights-at-freddys-2-free-roblox_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/how-to-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/roblox-snyapse-free_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/hacks-for-mm2-in-roblox_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/how-to-protect-against-hacks-in-roblox-games_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/roblox-hack-account-username-and-password_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/roblox-rocitizens-cheats_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/brother-cheating-on-his-roblox-girlfriend_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/hackear-roblox-escape-prison-traspasar-las-paredes_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/how-to-get-free-robux-hack-2021-no-verification_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_off000034f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34F3 22488 bytes
SHA-256: 6af724fedfac3de1e4e172cca00efaecaab704d8a26aeb9c0e0adddf032897dc
font_01_sfnt_off000066e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66E9 19088 bytes
SHA-256: b89175d2264c9de52ee6cbc69ebd99c22d1ebdd23ea702351b9794e9f4bcb23b

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