Malicious PDF — malware analysis report

Static analysis result for SHA-256 a30f7224b0822f28…

MALICIOUS

PDF

35.2 KB Created: 2021-07-04 04:43:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 6bc7228939a32cd992bbf446ad68dd39 SHA-1: 3e0bbf4fd2fb6e4484b2cfb2a93c20d74837fb5c SHA-256: a30f7224b0822f28cc8b9a131c957409ae86dd21e7535490a95ba28adbc14c6b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. 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 0.9980

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/406889139/free-coins-and-spins-coin-master-game-hack PDF link annotation
    • https://dolphintour.vn/images/uploadsfiles/coin-master-mod_GM406889139.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/how-to-get-free-robux-in-roblox-2021-no-download_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/roblox-treelands-hack_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/free-level-7-executor-roblox_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/free-robux-space_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/roblox-mad-city-speed-hack_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/como-hackear-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/free-robux-app-real_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/free-robux-hack-no-survey-2021_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/roblox-plane-blueprints-free_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/easy-robux-generator_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/cheat-roblox-lumber-tyccon_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/coin-master-free-coins-and-spins_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_off000033ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33CE 22768 bytes
SHA-256: d47812adeabd1edce42e550862062af4784adb8406c8293be26295be3ca32439
font_01_sfnt_off000066bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66BC 18348 bytes
SHA-256: c90f632020bcb1e728f62a43997badda2860e0d329262e99dedc1f8a12c39115

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