Malicious PDF — malware analysis report

Static analysis result for SHA-256 76ccc7f605e82aef…

MALICIOUS

PDF

33.9 KB Created: 2021-07-01 22:31:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d8460cbc2fa521a6d7ba102405fb01e8 SHA-1: 3d8fa65271f673f8ebcd678268c0ee231438bfeb SHA-256: 76ccc7f605e82aefb734872a07c3bfb946548a38f3c3aa4a026722e82589701c
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 0.9980

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-server-hosting-free-game-hack PDF link annotation
    • https://www.das-partners.com/uploaded_files/userfiles/files/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/coin-master-free-chip_GM406889139.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/free-spin-appscoin-master_GM406889139.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/2021-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/hacks-master-coin_GM406889139.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/free-roblox-intros_GM431946152.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/toolbox-premium-apk_GM479516143.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/how-to-get-free-robux-without-email-address_GM431946152.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/wurst-mc_GM479516143.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/free-robux-rewards_GM431946152.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/minecraft-hacker-mask_GM479516143.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/coin-master-100-spin_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_off00003168.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3168 22028 bytes
SHA-256: cdcf3aa1ad2094e88cd40586fb6f2031f6bb79f48ee34001c5b0299d8ec5f445
font_01_sfnt_off00006214.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6214 18264 bytes
SHA-256: 5ec3f0b561cebc5d47f64e939320a46a649b92723dcace5f5f230f044584545d

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