Malicious PDF — malware analysis report

Static analysis result for SHA-256 83a6aab4c4b02dec…

MALICIOUS

PDF

34.1 KB Created: 2021-07-01 20:39:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 24d30f17d27c513bc66f0e1d99f168da SHA-1: 3da9d05164e1a101e73bebfd9327a386ad528eeb SHA-256: 83a6aab4c4b02dec92def221c19ebcc70cd7d3772aab1cc5f0de7b9378d6c14d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links and text referencing game hacks and free in-game currency, designed to lure users into clicking. The primary link, http://netcdn.co/app/479516143/minecraft-pe-free-ios-game-hack, is flagged as a redirector for game hacks. This suggests the document's purpose is to facilitate the download of malicious software or redirect users to phishing sites. The ML classifier strongly supports the malicious nature of this PDF.

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/479516143/minecraft-pe-free-ios-game-hack PDF link annotation
    • http://dohafashionstores.com/uploaded_files/userfiles/files/update-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.dohafashionstores.com/uploaded_files/userfiles/files/minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://dohafashionstores.com/uploaded_files/userfiles/files/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://www.dohafashionstores.com/uploaded_files/userfiles/files/robux-offers_GM431946152.pdfIn PDF document text
    • http://www.dohafashionstores.com/uploaded_files/userfiles/files/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://dohafashionstores.com/uploaded_files/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://dohafashionstores.com/uploaded_files/userfiles/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://www.dohafashionstores.com/uploaded_files/userfiles/files/coin-master-spin-rewards_GM406889139.pdfIn PDF document text
    • http://dohafashionstores.com/uploaded_files/userfiles/files/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.dohafashionstores.com/uploaded_files/userfiles/files/apps-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://dohafashionstores.com/uploaded_files/userfiles/files/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://dohafashionstores.com/uploaded_files/userfiles/files/coin-master-hack-version-apk-download_GM406889139.pdfIn PDF document text
    • http://dohafashionstores.com/uploaded_files/userfiles/files/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://www.dohafashionstores.com/uploaded_files/userfiles/files/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.dohafashionstores.com/uploaded_files/userfiles/files/coin-master-hack-app-for-iphone_GM406889139.pdfIn PDF document text
    • http://www.dohafashionstores.com/uploaded_files/userfiles/files/spins-gratis-coin-master-hoy_GM406889139.pdfIn PDF document text
    • http://www.dohafashionstores.com/uploaded_files/userfiles/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://dohafashionstores.com/uploaded_files/userfiles/files/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://dohafashionstores.com/uploaded_files/userfiles/files/how-to-hack-mcpe-master-coins_GM406889139.pdfIn PDF document text
    • http://dohafashionstores.com/uploaded_files/userfiles/files/free-spins-coin-master-links-blogspot_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_off00003150.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3150 22444 bytes
SHA-256: bcb04b9bd6c891d57b31a5253073966cd17cc93d6dc0d504876dec1c8bdd6791
font_01_sfnt_off0000630f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x630F 18152 bytes
SHA-256: 9217169def43f8c16a67344ac79484d347e21e3639697df2a6f77d3a213ff034

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