Malicious PDF — malware analysis report

Static analysis result for SHA-256 be191375727e35c2…

MALICIOUS

PDF

34.7 KB Created: 2021-06-28 16:21:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c5cdc1dd96a5a771aaa39d57b78df2fe SHA-1: 137bdc606833a25c5cbc7fb11b5b71674ac9ba75 SHA-256: be191375727e35c2e48b5e9b0fd37663d9ac4e1d37caecb3135ff6221bb4bef1
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/how-to-jump-high-on-roblox-hack-2021-game-hack PDF link annotation
    • https://www.vista-design.hr/files/where-to-get-robux_GM431946152.pdfIn PDF document text
    • https://www.vista-design.hr/files/coin-master-hack-without-downloading-apps_GM406889139.pdfIn PDF document text
    • http://www.vista-design.hr/files/free-spins-on-coin-master-2021-ios_GM406889139.pdfIn PDF document text
    • http://www.vista-design.hr/files/free-robux-roblox-novemever-2021_GM431946152.pdfIn PDF document text
    • http://www.vista-design.hr/files/is-there-any-tricks-or-working-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.vista-design.hr/files/coin-and-spin-link_GM406889139.pdfIn PDF document text
    • https://www.vista-design.hr/files/free-robux-icon_GM431946152.pdfIn PDF document text
    • http://www.vista-design.hr/files/roblox-hack-download-no-survey-no-verification_GM431946152.pdfIn PDF document text
    • https://www.vista-design.hr/files/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • https://www.vista-design.hr/files/coin-master-pc-game-free-download_GM406889139.pdfIn PDF document text
    • http://www.vista-design.hr/files/does-e-free-work-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.vista-design.hr/files/get-free-clothes-from-roblox_GM431946152.pdfIn PDF document text
    • https://www.vista-design.hr/files/coin-master-free-spins-cheat-deutsch_GM406889139.pdfIn PDF document text
    • https://www.vista-design.hr/files/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://www.vista-design.hr/files/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.vista-design.hr/files/coin-master-money-hack_GM406889139.pdfIn PDF document text
    • https://www.vista-design.hr/files/coin-master-for-pc-free-download_GM406889139.pdfIn PDF document text
    • https://www.vista-design.hr/files/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://www.vista-design.hr/files/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • https://www.vista-design.hr/files/coinmasterfreespinlink_GM406889139.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_off00002e6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E6E 22132 bytes
SHA-256: dc8baa2bc0fd3b4f5e37c6a15e3df2a07f6655229add65cfd53a62ba5f4fb744
font_01_sfnt_off00005f3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F3F 20252 bytes
SHA-256: aee20544b4175f6322b502959838b2650d7b1e9bc8d28386b85805d79427bae9

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