Malicious PDF — malware analysis report

Static analysis result for SHA-256 091b0221042d92f5…

MALICIOUS

PDF

35.1 KB Created: 2021-07-05 18:17:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 566e87d38ae47ff9894eb0abb2b24aab SHA-1: 02861f0ca6657313d4ec7aa93ea8cc246461dbc8 SHA-256: 091b0221042d92f53fb6669ee0bec31acf8f7fbe94f3e0640feb099d9f6cc8be
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/real-working-coin-master-hack-game-hack PDF link annotation
    • https://financia-business-school.com/static/upload/files/free-roblox-admin-codes_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-hack-app-for-ios_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-2021-anti-cheat_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/freespinandcoinblogspot-com-2021-11-coinmasterfreespins_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/actual-free-robux_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/infinite-jump-hack-for-roblox-devs_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-weapon-hack_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-robux-redeem-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-roblox-codes-september-2021_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-daily-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-roblox-followers_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/robux-hack-no-reward-in-survey_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-get-free-robux-no-hack-or-glitch_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
stream_002_off0000325e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x325E 22996 bytes
SHA-256: 7455ccc034c147d9b06e7d3e858ab846b2105cee903e270048d20d2f631638b5
font_01_sfnt_off00006654.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6654 18276 bytes
SHA-256: 6af67ab231adcdd307a15a6a4f5ae357b0ac924b8d59694997f1e905b533e36c

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