Malicious PDF — malware analysis report

Static analysis result for SHA-256 34b95955c29c46ed…

MALICIOUS

PDF

35.3 KB Created: 2021-07-07 16:49:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: f4052e507af877024bde06dae1f40943 SHA-1: 4d4deec86e62d13555b4b96d7cf7b5419ffbecad SHA-256: 34b95955c29c46ed3f23e827ac851f524d3e67c08ec4b977da6273b7d20457e3
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/431946152/roblox-royale-high-diamond-hack-game-hack PDF link annotation
    • http://www.rigor.co.mz/uploaded_files/userfiles/files/robux-free-com_GM431946152.pdfIn PDF document text
    • http://www.rigor.co.mz/uploaded_files/userfiles/files/free-robux-generator-2021-real-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.rigor.co.mz/uploaded_files/userfiles/files/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://www.rigor.co.mz/uploaded_files/userfiles/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://www.rigor.co.mz/uploaded_files/userfiles/files/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://www.rigor.co.mz/uploaded_files/userfiles/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.rigor.co.mz/uploaded_files/userfiles/files/free-alt-account-roblox_GM431946152.pdfIn PDF document text
    • http://www.rigor.co.mz/uploaded_files/userfiles/files/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://www.rigor.co.mz/uploaded_files/userfiles/files/robux-free-online_GM431946152.pdfIn PDF document text
    • http://www.rigor.co.mz/uploaded_files/userfiles/files/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • http://www.rigor.co.mz/uploaded_files/userfiles/files/jj-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.rigor.co.mz/uploaded_files/userfiles/files/hacker-net-roblox_GM431946152.pdfIn PDF document text
    • http://www.rigor.co.mz/uploaded_files/userfiles/files/i-need-robux_GM431946152.pdfIn PDF document text
    • http://www.rigor.co.mz/uploaded_files/userfiles/files/coin-master-hack-fast_GM406889139.pdfIn PDF document text
    • http://www.rigor.co.mz/uploaded_files/userfiles/files/how-to-cheat-in-phantom-forces-roblox_GM431946152.pdfIn PDF document text
    • http://www.rigor.co.mz/uploaded_files/userfiles/files/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://www.rigor.co.mz/uploaded_files/userfiles/files/hack-injector-roblox-granny_GM431946152.pdfIn PDF document text
    • http://www.rigor.co.mz/uploaded_files/userfiles/files/c00lkidd-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.rigor.co.mz/uploaded_files/userfiles/files/how-to-get-a-bunch-of-free-robux_GM431946152.pdfIn PDF document text
    • http://www.rigor.co.mz/uploaded_files/userfiles/files/free-robux-generator-com-roblox-hack_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
stream_002_off000030f1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30F1 22432 bytes
SHA-256: 592f6fa443df4ed4e25ec60816f82db9af7cb448d1b8098c7d8ea9975358bee5
font_01_sfnt_off000062e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E0 19724 bytes
SHA-256: 1a67ae04acdcf9bb6160b94dd58735b3f7a5fd1d5d3840fc5372402fae40359c

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