Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d90b9ca563249cc…

MALICIOUS

PDF

41.7 KB Created: 2021-05-15 07:07:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: dbc6eee70dca244c88371d66c70f7b41 SHA-1: 503136ca65c4352d9dcb995a599ff1ff7f9ed465 SHA-256: 0d90b9ca563249cc65fbdf67ea08cc8fa45a0dc0e83bf115680abd454d2489c3
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/where-to-get-free-robux-game-hack PDF link annotation
    • https://www.extremeoutdoorleague.co.za/images/hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • https://www.extremeoutdoorleague.co.za/images/get-me-free-robux_GM431946152.pdfIn PDF document text
    • https://www.extremeoutdoorleague.co.za/images/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • https://www.extremeoutdoorleague.co.za/images/unlimited-spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.extremeoutdoorleague.co.za/images/coin-master-free_GM406889139.pdfIn PDF document text
    • https://www.extremeoutdoorleague.co.za/images/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://www.extremeoutdoorleague.co.za/images/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • https://www.extremeoutdoorleague.co.za/images/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://www.extremeoutdoorleague.co.za/images/coin-master-game-free_GM406889139.pdfIn PDF document text
    • https://www.extremeoutdoorleague.co.za/images/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • https://www.extremeoutdoorleague.co.za/images/coin-master-unlimited-spins_GM406889139.pdfIn PDF document text
    • https://www.extremeoutdoorleague.co.za/images/50-000-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.extremeoutdoorleague.co.za/images/coin-master-free-spins-cheat-deutsch_GM406889139.pdfIn PDF document text
    • https://www.extremeoutdoorleague.co.za/images/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://www.extremeoutdoorleague.co.za/images/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • https://www.extremeoutdoorleague.co.za/images/free-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • https://www.extremeoutdoorleague.co.za/images/coin-master-card-collection-link_GM406889139.pdfIn PDF document text
    • https://www.extremeoutdoorleague.co.za/images/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • https://www.extremeoutdoorleague.co.za/images/minecraft-windows-free_GM479516143.pdfIn PDF document text
    • https://www.extremeoutdoorleague.co.za/images/minecraft-hacked-client-18_GM479516143.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_off0000469c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x469C 25168 bytes
SHA-256: 3e59cce716fa7f3014b850eeede207583ef571ed4bfb1aa1c757e44ef80cb35b
font_01_sfnt_off00008022.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8022 18484 bytes
SHA-256: fb52c80d186d334eb1da06902c7e87ffbc7c7b48a2b49bbb6429fdd2e0d05906

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