Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf6572f4250f16dc…

MALICIOUS

PDF

45.0 KB Created: 2021-06-03 15:46:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 1f91df784053c175f3667247a52ffa1d SHA-1: 67dca9e16ec4230552ffd83b877f4622e0b51a6b SHA-256: bf6572f4250f16dcb3b26f455a6279d80b335148fb16390afd20c106e12cca6c
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 0.9865

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 https://netcdn.online/app/479516143/is-minecraft-free-game-hack PDF link annotation
    • https://www.jcn.co.uk/uploads/files/files/roblox-hax_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/withdraw-robux_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/easy-roblox-today_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/give-me-robux-now_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/free-coin-master-spins-no-verification_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/how-to-get-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/coin-master-free-coins-and-spins-today_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/minecraft-apk-free-download-016-0_GM479516143.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/pokemon-go-kanto-tour-free-version_GM1094591345.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/coin-master-game-hacking-tricks_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
stream_004_off000055d3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x55D3 25588 bytes
SHA-256: d0d7ad700af9f75a3525bb1d0f84fb01532eef50d2a0831736e706b1da430fea
font_01_sfnt_off00008f9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F9D 17568 bytes
SHA-256: 44c16732000c578f47393ad484896351af84166fbd5efffd5af9fb6697599acb

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