Malicious PDF — malware analysis report

Static analysis result for SHA-256 df926257fd2891b4…

MALICIOUS

PDF

46.8 KB Created: 2021-06-03 15:29:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 0387a9fd0c733310454fe3b56fe9a91f SHA-1: 9174935e9070adaad06a6b5844713eca13f65dc6 SHA-256: df926257fd2891b43a4b84ead0df79818c47e3bba896406204cca9d9443b5914
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 0.9832

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/1330123889/pubg-600-uc-redeem-code-game-hack PDF link annotation
    • https://www.jcn.co.uk/uploads/files/files/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/free-robux-today_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/pubg-mobile-uc-qatar_GM1330123889.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/free-tiktok-likes-app_GM835599320.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/free-accessories-roblox_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/coin-master-gift-hack_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/mosttechs-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/coin-master-spins_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/coin-master-free-spin-today_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_off00004b4d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B4D 30796 bytes
SHA-256: daf63f3e4b9072336f098f91ccc4f9e385c9a7a775dff3cef311ab5e3e7eb7f8
font_01_sfnt_off000092b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92B9 18812 bytes
SHA-256: dab802659a98d4e5a93ed9b0fabeeeb2fe15f04471d110c1cfaea75534318837

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