Malicious PDF — malware analysis report

Static analysis result for SHA-256 c17f53d7c729f018…

MALICIOUS

PDF

34.5 KB Created: 2021-07-03 16:07:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: fe4cf60861cd3ab53da3df46e765a2fb SHA-1: c9b9bd33e6c1c33a11fd4d07e2932c1d3311a230 SHA-256: c17f53d7c729f018a6a3a1d96026044c9aeb2166103de3b75dc97419bee5378a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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/free-robux-hack-no-human-verification-game-hack PDF link annotation
    • http://www.pspmrsmbpj.com/opac/repository/gaming-tutorials-com-robux-cheat_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/rbx-points-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/install-roblox-player-free_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/free-roblox-redeem-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/minecraft-world-free-download_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/ways-to-get-free-robux-in-roblox_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/free-robux-fast-ponits_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/hack-para-roblox-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/free-online-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/woman-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/roblox-craftwars-hack_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/hack-my-game-xyz-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/roblox-apk-hack-no-survey_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/freespinandcoinblogspotcom-2021-11-coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/free-robux-site_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F8A 22028 bytes
SHA-256: cbb41126b74b01ba1e8253e45fb52412bcc7983eac14c3781dd23f14db9f7176
font_01_sfnt_off00006099.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6099 19504 bytes
SHA-256: eb8ce7e3da5a97c3b4f0a1013d81a421e960dbc6320d0a210e145d8bed029be0

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