Malicious PDF — malware analysis report

Static analysis result for SHA-256 2724a2c9933d7c85…

MALICIOUS

PDF

43.2 KB Created: 2021-05-12 11:30:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a2c34f7dca7ee24f152f10ce392088e9 SHA-1: 124f0a8ba0d9df0793dc1fd153777bf21f8992cd SHA-256: 2724a2c9933d7c85c495db4fae02516cbf81036dfb98e275a67c5a209458cee6
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 0.9969

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 https://netcdn.xyz/app/406889139/coin-master-fan-page-free-spins-game-hack PDF link annotation
    • https://financia-business-school.com/static/upload/files/coin-master-hack-version-2021_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-robux-com_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-spins-coin-master-october-13-2021_GM406889139.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/coin-master-free-spins-iphone-2021_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-spin-and-daily-news-coin-master_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/rbx-earn_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/robuxglobalcom-no-verification_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-robux-accounts_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/weird-roblox_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/archery-master-3d-unlimited-coins-hack_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/robux-come_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/cpbildco-robux_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-money-hack_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
stream_003_off00004caf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CAF 24976 bytes
SHA-256: 38c0a9c6411f14a4c4492ba84301352084f7d66eea387dc1019517038f35d325
font_01_sfnt_off0000864a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x864A 18328 bytes
SHA-256: d106028e9c816c4ed38d7f9dbfb4c1b42a2571be69ef627f7b4a635c4c6a8b94

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