Malicious PDF — malware analysis report

Static analysis result for SHA-256 c81286de05175aaa…

MALICIOUS

PDF

35.0 KB Created: 2021-07-08 09:14:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 48567f5e7af2323fa9c66343e0c08a6f SHA-1: ad8150d3739909b4a1153ce1a2bba55240853ce6 SHA-256: c81286de05175aaab546fe8797fba1da51e3a5e74fc9d7b8bed532e8c5e126d0
82 Risk Score

Malware Insights

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

The PDF document contains a lure related to game hacks and free virtual currency, directing users to an external URL. This heuristic, combined with the ML classification, indicates a malicious intent to redirect users to potentially harmful sites. No scripts were extracted, but the document's structure and embedded URLs suggest it's part of a phishing or scam campaign.

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.tw/app/431946152/how-much-robux-can-you-get-with-1-million-dollars-game-hack PDF link annotation
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/daily-spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/health-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/free-robux-codes_GM431946152.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/minecraft-win-10-free_GM479516143.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/get-roblox-hacks-mac_GM431946152.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/roblox-how-to-get-any-face-for-free_GM431946152.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/how-to-get-free-coins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/rxgate-cf-free-robux_GM431946152.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/free-mods-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/roblox-inappropriate_GM431946152.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/hack-coin-master-using-cheat-engine_GM406889139.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/free-roblox-promo-codes-2021-may_GM431946152.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/roblox-free-robux-deutsch_GM431946152.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/how-to-be-a-hacker-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.shopinkart.co.in/uploaded_files/userfiles/files/coin-master-hack-pro-gamers_GM406889139.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_off00003128.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3128 21756 bytes
SHA-256: 8bbfc5c67fe458780995821175bb47fdb6c718a7c0a034af00f38cbe21081c61
font_01_sfnt_off00006119.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6119 20008 bytes
SHA-256: 723916b35449ed955ae15cf7f12f067bf8ea2f6a06f44dabbda2bc1e5f6077fd

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