Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5133a88b4179d06…

MALICIOUS

PDF

34.5 KB Created: 2021-07-06 05:24:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: dd0e59da65b99846fab719b3e9d56400 SHA-1: 1b6e3fb0a11a098e9c276a758032b6081562e2a4 SHA-256: d5133a88b4179d06debf63a5b2ff61e0ea7495ffd80e3c4207b69fbe738b0de5
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/406889139/coin-master-hack-club-game-hack PDF link annotation
    • https://www.franchiseinnovations.org/broker-site/files/files/roblox-hacks-no-download-2021_GM431946152.pdfIn PDF document text
    • https://www.franchiseinnovations.org/broker-site/files/files/minecraft-handbook_GM479516143.pdfIn PDF document text
    • https://www.franchiseinnovations.org/broker-site/files/files/free-robux-zephplayz_GM431946152.pdfIn PDF document text
    • https://www.franchiseinnovations.org/broker-site/files/files/robux-for-free-no-password_GM431946152.pdfIn PDF document text
    • https://www.franchiseinnovations.org/broker-site/files/files/rape-simulator_GM431946152.pdfIn PDF document text
    • https://www.franchiseinnovations.org/broker-site/files/files/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.franchiseinnovations.org/broker-site/files/files/roblox-free-hat-catalog_GM431946152.pdfIn PDF document text
    • https://www.franchiseinnovations.org/broker-site/files/files/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.franchiseinnovations.org/broker-site/files/files/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
    • https://www.franchiseinnovations.org/broker-site/files/files/code-to-hack-robux_GM431946152.pdfIn PDF document text
    • https://www.franchiseinnovations.org/broker-site/files/files/how-do-you-get-robux-for-free-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.franchiseinnovations.org/broker-site/files/files/roblox-broken-bones-4-hack_GM431946152.pdfIn PDF document text
    • https://www.franchiseinnovations.org/broker-site/files/files/optifine-pe_GM479516143.pdfIn PDF document text
    • https://www.franchiseinnovations.org/broker-site/files/files/roblox-free-robux-freedom_GM431946152.pdfIn PDF document text
    • https://www.franchiseinnovations.org/broker-site/files/files/get-free-robux-today_GM431946152.pdfIn PDF document text
    • https://www.franchiseinnovations.org/broker-site/files/files/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • https://www.franchiseinnovations.org/broker-site/files/files/roblox-play-now-for-free-no-sign-up_GM431946152.pdfIn PDF document text
    • https://www.franchiseinnovations.org/broker-site/files/files/free-robux-pastebin-no-wait-2021_GM431946152.pdfIn PDF document text
    • https://www.franchiseinnovations.org/broker-site/files/files/actual-free-robux_GM431946152.pdfIn PDF document text
    • https://www.franchiseinnovations.org/broker-site/files/files/hacking-prison-life-roblox_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_off00002fea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FEA 23052 bytes
SHA-256: 1a38673716c3e9cae8846188defba443ba846c9dd60cc7b0648fc185c1f6d84d
font_01_sfnt_off000063c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63C0 18376 bytes
SHA-256: dd43411f80a60a82ab72e2bc8e086b2bb22e047feb8d2d035d108791568e8130

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