Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2f9d66bb7c3a702…

MALICIOUS

PDF

35.2 KB Created: 2021-06-26 07:51:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: f78b885efcde659e3df7b5b9a8882b1e SHA-1: 4dce0c0c45e21e964d91efe5976f3bb56e388116 SHA-256: c2f9d66bb7c3a70251a714668f22243356ca24c513f77766310f7644feaa5c20
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and a lure related to 'free Robux' and game hacks, indicating a phishing or scam attempt. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly suggests the document's purpose is to redirect users to potentially malicious sites. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure point towards a social engineering attack.

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/is-getting-free-robux-illegal-game-hack PDF link annotation
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/robux-hack-today_GM431946152.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-link-download_GM406889139.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/how-to-get-free-robux-by-inspecting-2021_GM431946152.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/how-to-get-free-robux-no-builders-club_GM431946152.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/free-tiktok-followers-no-human-verification_GM835599320.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/hd-admin-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/roblox-free-item-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/free-roblox-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/how-to-get-minecraft-for-free-on-ps4-2021_GM479516143.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/wurst-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/gamehunters-coin-master_GM406889139.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/ben-10-universal-showdown-cheats-for-roblox_GM431946152.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/robux-download_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_off000031c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31C5 22776 bytes
SHA-256: 5e5f410d38a1c95c1ab518fd1f27c848c136fe034ac23a900c075620b0eab316
font_01_sfnt_off000064b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64B7 19012 bytes
SHA-256: 37fbc17c4cfc0ef33e0451ea13647a47f8bdc9829d73bab991b17630b08c6b2d

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