Malicious PDF — malware analysis report

Static analysis result for SHA-256 74b4e95e1aecb25f…

MALICIOUS

PDF

44.0 KB Created: 2021-06-02 07:02:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3aae677c5436438ebd18cb5062dab673 SHA-1: 49ec339cf7e633e6906f15c9f229c8e9f8a36684 SHA-256: 74b4e95e1aecb25f54fb44f5d51f13a6a66c94b4513d810c84391c27033ca921
102 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 0.9984

Heuristics 5

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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-robux-generator-com-roblox-hack-game-hack PDF link annotation
    • https://pneukalousek.cz/images/free-minecraft-texture-packs-java_GM479516143.pdfIn PDF document text
    • https://pneukalousek.cz/images/coin-master-hack-lost-world-2021_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/roblox-character-free_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/free-spin-and-daily-news-coin-master_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • https://pneukalousek.cz/images/coin-master-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/free-minecraft-wallpaper_GM479516143.pdfIn PDF document text
    • https://pneukalousek.cz/images/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/how-to-get-minecraft-for-free-on-laptop_GM479516143.pdfIn PDF document text
    • https://pneukalousek.cz/images/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • https://pneukalousek.cz/images/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/levvvel-coin-master_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/free-downloads-for-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/can-you-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://pneukalousek.cz/images/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://192.168.0.99/%20%3Cp%3E%3Cp%3Ehow%20to%20hack%20roblox%20games%20with%20artmoney%3Cp%3E%3Cp%3Eroblox%20robux%20hack%202015%3Cp%3E%3Cp%3EGenerate%20free%20easy%20Robux%20today%20with%20the%20number%20one%20tool%20for%20getting%20free%20Robux%20online!%20ItPDF link annotation
    • 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_off000051f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51F8 24356 bytes
SHA-256: 27ecf76e800902998c7efe723a4fbe1889f001626ab66051bdc1fadd0df59dbb
font_01_sfnt_off000089dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89DD 18384 bytes
SHA-256: 076eebe3902087961ed3e94796dbc05ef28cead6dc440b2765fee04a49058685

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