Malicious PDF — malware analysis report

Static analysis result for SHA-256 25f5fedaf88da94f…

MALICIOUS

PDF

48.5 KB Created: 2021-05-15 16:02:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 309055d24022ca7b4a0e4e658847590f SHA-1: daa2fe5dffab30ce687ebdda27df0c6ca2f91bab SHA-256: 25f5fedaf88da94f19fcf1456c16e5755882e73bb3b859013cf9ed9f9e70b820
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 0.9013

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/free-roblox-account-generator-game-hack PDF link annotation
    • https://www.devries-group.de/images/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.devries-group.de/images/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
    • https://www.devries-group.de/images/free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.devries-group.de/images/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.devries-group.de/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.devries-group.de/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://www.devries-group.de/images/free-spin-coin-master-new-link_GM406889139.pdfIn PDF document text
    • https://www.devries-group.de/images/free-robux-no-email_GM431946152.pdfIn PDF document text
    • https://www.devries-group.de/images/best-free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • https://www.devries-group.de/images/roblox-com-hack_GM431946152.pdfIn PDF document text
    • https://www.devries-group.de/images/minecraft-pocket-edition-hack_GM479516143.pdfIn PDF document text
    • https://www.devries-group.de/images/free-coin-master-spins-no-verification_GM406889139.pdfIn PDF document text
    • https://www.devries-group.de/images/roblox-login-hack_GM431946152.pdfIn PDF document text
    • https://www.devries-group.de/images/roblox-free-hair-boy_GM431946152.pdfIn PDF document text
    • https://www.devries-group.de/images/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • https://www.devries-group.de/images/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • https://www.devries-group.de/images/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • https://www.devries-group.de/images/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • https://www.devries-group.de/images/coin-master-game-free_GM406889139.pdfIn PDF document text
    • https://www.devries-group.de/images/robux-com-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049e8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49E8 29404 bytes
SHA-256: 63f2d6500631f04fba390639c8126b206a2a9ba79537fba1b6bcfcb9dfabe618
font_01_sfnt_off00008dcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DCC 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009ade.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9ADE 18420 bytes
SHA-256: 7ac5e27b34c4b1ad8a7b5cb593be6d3cc1f904c1acada5288a93079ea3be41d7

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