Malicious PDF — malware analysis report

Static analysis result for SHA-256 51b711067c9e2bc6…

MALICIOUS

PDF

35.4 KB Created: 2021-06-28 12:22:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 0316a8a56df86d04f865b20088a8e74c SHA-1: 89686a96de4dd44df0d6bb9721e233fbe116ea1a SHA-256: 51b711067c9e2bc600572517e2b88c8eb9f2906da84c045c92f172bd05d325d4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to a known malicious redirector, masquerading as a 'free generator' or 'game hack'. The document body and heuristics indicate a lure for free game currency or cheats, which is a common social engineering tactic. The primary IOC is the redirector URL, which likely serves as a gateway to further malicious content or downloads.

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/how-to-get-fre-robux-on-a-computer-game-hack In PDF document text
    • https://privatearrangements.co.nz/public/files/hack-card-collection-coin-master_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/tiktok-free-100-likes_GM835599320.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/free-robux-generator_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/coin-master-hack-100-working_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/roblox-stylish-animation-pack-free_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/coinmaster-free-spins-link_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/free-money-adopt-me-roblox_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/free-minecraft-accounts-2021_GM479516143.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/free-spins-for-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/free-spins-and-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/how-to-egt-free-robux-robuxian-youtbe_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/going-though-walls-roblox-hack_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/roblox-hack-account-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/coin-master-hack-apk-latest-version-2021_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/free-exploits-for-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_off000030e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30E8 22856 bytes
SHA-256: d30b9124096973b7ee3ac49d01266c66bbac41c73fef58374fe4a5ba64022204
font_01_sfnt_off00006455.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6455 19420 bytes
SHA-256: 70d77eab397e240d874d3b996553960ef08ecd532deaac1aa6c7e634e30c974b

Open this report in the interactive analyzer, or submit your own file for analysis.