Malicious PDF — malware analysis report

Static analysis result for SHA-256 f88f5b352e0a54c5…

MALICIOUS

PDF

36.1 KB Created: 2021-06-20 05:10:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 2e09094edadb3d488958ad0106ff3dac SHA-1: 0014cdcc0ab892c627e087c902626e4357de9d77 SHA-256: f88f5b352e0a54c5ee228daee56240451770ce55f3ad1b492e15c70bf067a3e6
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.co/app/431946152/free-robux-generator-2021-no-survey-game-hack PDF link annotation
    • http://jarviskeller.co.uk/media/storage/editor/files/free-minecraft-skins-java_GM479516143.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/minecraft-free-download-windows_GM479516143.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/roblox-lumber-tycoon-2-hack-xbox-one_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/free-stuff-to-get-in-roblox_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/tiktok-free-google-home-mini_GM835599320.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/free-robux-link_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/free-robux-in-1-sec_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/coin-master-hack-root_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_off0000339d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x339D 22764 bytes
SHA-256: f58ea09389fd0d4f49087853893b5b81c42c05dfae2f13bf468cc0eff5fe8a43
font_01_sfnt_off00006672.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6672 19516 bytes
SHA-256: 215bbe1509df05bb6592a2eb23184ac9fd1abeffda7f861746e5b701ad597e03

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