Malicious PDF — malware analysis report

Static analysis result for SHA-256 a458e5693f6013c3…

MALICIOUS

PDF

42.6 KB Created: 2021-05-15 11:05:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 53419c53787a899629301fcab91a30b2 SHA-1: 771ae342bc1b2c0d5e6ba5a09d9f81355f05512c SHA-256: a458e5693f6013c3646b23672df98c5f89401b3bd8c23305b035664df6155ee1
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 0.9971

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-hack-apk-free-download-game-hack PDF link annotation
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/how-to-change-your-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/how-to-download-minecraft-for-free-on-windows-10_GM479516143.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/roblox-hack-client_GM431946152.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/free-roblox-account-generator_GM431946152.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/roblox-account-hacker-tool_GM431946152.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/rbx-free-robux_GM431946152.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/coin-master-hack-unlimited-spins-game-download_GM406889139.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.kofordconverting.com/uploaded_files/userfiles/files/free-spins-coin-master-generator_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_off00004b21.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B21 24596 bytes
SHA-256: 9615edcd25fd9db17270574e650e2bcf2b8d02bb32ae29612c0a619a276e8d84
font_01_sfnt_off00008308.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8308 18636 bytes
SHA-256: 9aef5eba1b944da03ad0d0211b0df86da0d90e0cf099764a6ba9c9a2ed29eb67

Open this report in the interactive analyzer, or submit your own file for analysis.