Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b5a576aa9ed0d6c…

MALICIOUS

PDF

39.7 KB Created: 2021-05-30 07:30:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 2ec8a959055c4f8ce2767352c634ff08 SHA-1: f7962a5c51847fc501770afb89a25174f2d025fe SHA-256: 6b5a576aa9ed0d6c9974a46bbfc8f1808391d9715d91c1a8a22e1e694ed59de2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains links designed to lure users into clicking on offers for free game items or hacks. These links redirect to malicious infrastructure, specifically identified as a redirector for game hacks. The document body and embedded links strongly suggest a phishing or scam attempt to drive traffic to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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 https://netcdn.xyz/app/431946152/free-robux-games-that-actually-work-2021-game-hack In PDF document text
    • https://www.futureminers.co.za/wp-content/uploads/fsqm-files/minecraft-font-free_GM479516143.pdfIn PDF document text
    • https://www.futureminers.co.za/wp-content/uploads/fsqm-files/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://www.futureminers.co.za/wp-content/uploads/fsqm-files/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.futureminers.co.za/wp-content/uploads/fsqm-files/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
    • https://www.futureminers.co.za/wp-content/uploads/fsqm-files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.futureminers.co.za/wp-content/uploads/fsqm-files/robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://www.futureminers.co.za/wp-content/uploads/fsqm-files/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.futureminers.co.za/wp-content/uploads/fsqm-files/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.futureminers.co.za/wp-content/uploads/fsqm-files/minecraft-free-android_GM479516143.pdfIn PDF document text
    • https://www.futureminers.co.za/wp-content/uploads/fsqm-files/free-minecraft-accounts-2021_GM479516143.pdfIn PDF document text
    • https://www.futureminers.co.za/wp-content/uploads/fsqm-files/minecraft-mobile-free_GM479516143.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_off00003a8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A8C 26108 bytes
SHA-256: 5ac6e46354d98d8fb11ab47332bb3318c596255a3f223cbd0db261c743983eb1
font_01_sfnt_off000074e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74E5 19796 bytes
SHA-256: 825df7cf396e8d9c124972fb8483e304b72a256d7e3507e7d5ad5df48b88867f