Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d4a117c0b8318d9…

MALICIOUS

PDF

34.7 KB Created: 2021-07-01 05:35:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 7adf8e213e42cd2da7fec2e9ddf51850 SHA-1: a775768285955c12f37dd3f65c2cf860da79c36a SHA-256: 6d4a117c0b8318d9952048eb09d6861e199275a72794e6b73b9f4636e28522a4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links and text that lure users into clicking on a URL promising free in-game currency or hacks. This URL, http://netcdn.co/app/431946152/free-robux-needs-password-game-hack, is identified as a malicious redirector. The document's content and heuristics strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/431946152/free-robux-needs-password-game-hack In PDF document text
    • https://www.bridalguide.com/sites/default/files/files/roblox-tower-defense-hacks_GM431946152.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/how-many-tiktok-free-folowers-make_GM835599320.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/hack-minecraft_GM479516143.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/roblox-hacking-exploit-2021_GM431946152.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/roblox-headless-horseman-free_GM431946152.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/coin-master-33-hack-version-download_GM406889139.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/coin-master-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/coin-master-card-collection-link_GM406889139.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/download-hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/bux-gg-roblox-free_GM431946152.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/minecraft-java-free-download_GM479516143.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/coin-master-free-coins-links-2021_GM406889139.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/how-to-get-a-free-keycard-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/free-minecraft-skins-java_GM479516143.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/hack-that-lets-you-join-full-servers-on-roblox_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000306a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x306A 22516 bytes
SHA-256: b11bb62f2dc518242ea9ca66fbee8a52e777ba4f862bc37e9746e969ebf4050e
font_01_sfnt_off00006210.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6210 19208 bytes
SHA-256: 9dfdd0171e91cff29a06a8258eff95f6abe58468f2bd97170ea358fa14c4ba34

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