Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b8ec96b755f2034…

MALICIOUS

PDF

34.6 KB Created: 2021-07-04 15:00:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 0001aa98e841cba5ffc23259aa1ebdc1 SHA-1: f1fef2e8352743a79048b668381c6db5e4baafd0 SHA-256: 9b8ec96b755f203438a05a9567e3c5608a02ba6f3084dd0d60e4c0e66fd8c9b8
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a document body that explicitly advertises 'Free Robux Hacks No Verification'. The heuristic firings confirm that the PDF links to external URIs, including one that uses a raw IP address, and specifically flags the 'game hack' lure. This indicates the document is designed to trick users into visiting malicious sites that likely host further malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/431946152/free-robux-hacks-no-verification-game-hack PDF link annotation
    • http://118.98.227.172/opac/repository/coin-master-free-daily-spins_GM406889139.pdfPDF link annotation
    • http://118.98.227.172/opac/repository/free-roblox-pin-codes_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/http-bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/roblox-script-hack-gui_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/how-to-get-free-robux-easy-pastebin_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/rolbox-hacks-for-robux_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/free-roblox-promo-codes-december-2021_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/claim-free-robux-roblox-rewards-http-bit-ly-2tuy5lz_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/roblox-rules_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/online-hacking-tricks-coin-master_GM406889139.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/free-robux-generator-only-quiz_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/minecraft-java-edition-free-trial_GM479516143.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/how-can-you-get-robux_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/pokemon-go-free-1km-buddy_GM1094591345.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/roblox-download-for-tablet-free_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/coin-master-free-coins-and-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/roblox-money-hack_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/roblox-printables-free_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/give-me-robux-now_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
font_00_sfnt_off00002fb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FB3 22380 bytes
SHA-256: e37bbc668f82db4e39a813df25f1eeff5d81ce2332326ddbbc82111db36ea450
font_01_sfnt_off00006180.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6180 19244 bytes
SHA-256: d7f6b7ff3c0ca36ad551dc1698c04b5b051d82f77f85620dffbaec3331a8b166

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