Malicious PDF — malware analysis report

Static analysis result for SHA-256 685005388a8d0fdd…

MALICIOUS

PDF

41.9 KB Created: 2021-05-17 20:12:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: d135a1c2cb771e08963e59bd73913eeb SHA-1: 81d6cf537fedf53f36a7449438c76b2a645f014b SHA-256: 685005388a8d0fdd77ff02986258b3fb6dd81f8a72cd3d85f8d50739aa1ab53c
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/431946152/roblox-generator-game-hack PDF link annotation
    • https://www.arquetopia.org/images/roblox-microsoft-rewards_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-unlimited-spins-hack_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/roblox-piano-hack_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • https://www.arquetopia.org/images/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/roblox-executor-free_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-bling-bling-card-coin-master_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-robux-codes_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-games-coin-master_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-15-free-spin-link-today_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-coins-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-roblox-website_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-free-spins-link-2021-no-verification_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_off000048a9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48A9 24664 bytes
SHA-256: eb4551beaa2ed49e4f93f83e0088bba31569060d81fe523f503201d701c8cbf2
font_01_sfnt_off00008191.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8191 18116 bytes
SHA-256: 124341eb3a4a3b8bc1f076925fa8461137298bb957754babdcbe9c7592fcce55

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