Malicious PDF — malware analysis report

Static analysis result for SHA-256 8730e4477c228d76…

MALICIOUS

PDF

45.6 KB Created: 2021-06-08 21:53:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 7bcddb95a7a07715296f9eaff9d00457 SHA-1: abb2d28635913b1051f943aa75b2901e2fb260ed SHA-256: 8730e4477c228d7621cda7f70a4d306f15d035371cff8ba4cf74450019690f98
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a password-protected-archive 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 0.9864

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.tw/app/431946152/how-to-get-free-robux-inspect-hack-game-hack PDF link annotation
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/roblox-how-to-get-free-clothes_GM431946152.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/gold-card-coin-master-free_GM406889139.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/roblox-rewards_GM431946152.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/minecraft-free-download-pc_GM479516143.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/free-pet-snacks-coin-master_GM406889139.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/daily-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/free-spins-on-coin-master-cheat_GM406889139.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/robux-free-2021_GM431946152.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/coin-master-heaven-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/minecraft-ps3-free-download_GM479516143.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/cheats-in-roblox-pet-simulator_GM431946152.pdfIn PDF document text
    • https://www.lanumedispa.ie/uploaded_files/userfiles/files/is-there-any-way-to-get-free-robux_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
stream_004_off000052e5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52E5 25584 bytes
SHA-256: 0dfdb096f8ad01d90608ffd609385a876125b0e310c3c0a1db6e2a253853f4f2
font_01_sfnt_off00008e03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E03 18856 bytes
SHA-256: 852bb07583cc69f1127a5f189624f47fcd3775a09363065a1f106966d6401353

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