Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c1c43ccb8f816e6…

MALICIOUS

PDF

42.3 KB Created: 2021-05-16 00:39:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 628231a2332658790f68979e25c4df60 SHA-1: acea25770f06a4405e9d630f7e1fc3ee61f1c61d SHA-256: 6c1c43ccb8f816e63c98ccf60950a87adc690dbf0f403e371697bcf992f63f7a
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by an ML classifier. It uses a clipboard-command (paste-and-run) lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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 https://netcdn.xyz/app/479516143/free-minecraft-account-list-game-hack PDF link annotation
    • http://www.access-coiffure-tours.fr/images/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/cm-free-spins_GM406889139.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/coin-master-hack-app-ios_GM406889139.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/roblox-games-to-play-for-free_GM431946152.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/roblox-script-hacks_GM431946152.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/coin-master-free-spin-now_GM406889139.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/coin-master-hack-unlimited-spins-apk-download_GM406889139.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/free-minecraft-skins-pe_GM479516143.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/coin-master-free-food_GM406889139.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/how-to-make-a-server-in-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/roblox-free-hats_GM431946152.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/coin-master-free-coins--spins_GM406889139.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/bit-ly-coin-master-hack_GM406889139.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_off00004ab8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AB8 25076 bytes
SHA-256: ecdc193933557d70f4b1e04e2da1e3d6d36c639c29a3f2f27ea10571e3b3cda4
font_01_sfnt_off00008452.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8452 17848 bytes
SHA-256: 5b1d54360e857fbda0e30a3304c93394a8bc996e2a6fac27502c58fec3e6bef5

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