Malicious PDF — malware analysis report

Static analysis result for SHA-256 a43741f7093c67b4…

MALICIOUS

PDF

41.6 KB Created: 2021-05-18 00:36:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: b5ba363c098df9f0690e25608f5c136e SHA-1: 0fbd8c3120586d3f4f2ba55b64622a44b591d82f SHA-256: a43741f7093c67b47d3d90fbe85e166f3f8795953f440bda2832efe2b5fc257d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure the user into clicking on what appears to be a game hack or generator. The primary link redirects to malicious infrastructure, indicating a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a potential for malicious redirection or further payload delivery, aligning with common phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/install-free-game-coin-master-game-hack In PDF document text
    • https://photographygroupofbunbury.com/images/easy-robux-generator_GM431946152.pdfIn PDF document text
    • https://photographygroupofbunbury.com/images/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • https://photographygroupofbunbury.com/images/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • https://photographygroupofbunbury.com/images/free-robux-rewards_GM431946152.pdfIn PDF document text
    • https://photographygroupofbunbury.com/images/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • https://photographygroupofbunbury.com/images/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • https://photographygroupofbunbury.com/images/coin-master-free-spin-best-link_GM406889139.pdfIn PDF document text
    • https://photographygroupofbunbury.com/images/robux-free-co_GM431946152.pdfIn PDF document text
    • https://photographygroupofbunbury.com/images/best-way-to-get-robux_GM431946152.pdfIn PDF document text
    • https://photographygroupofbunbury.com/images/i-cant-get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://photographygroupofbunbury.com/images/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • https://photographygroupofbunbury.com/images/robux-page_GM431946152.pdfIn PDF document text
    • https://photographygroupofbunbury.com/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://photographygroupofbunbury.com/images/minecraft-gun-mod-download-free_GM479516143.pdfIn PDF document text
    • https://photographygroupofbunbury.com/images/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • https://photographygroupofbunbury.com/images/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • https://photographygroupofbunbury.com/images/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • https://photographygroupofbunbury.com/images/buy-robux-free_GM431946152.pdfIn PDF document text
    • https://photographygroupofbunbury.com/images/www-coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • https://photographygroupofbunbury.com/images/coin-master-gold-cards-hack_GM406889139.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
stream_003_off00004acd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4ACD 23964 bytes
SHA-256: 5d7c5480ed0a1bef349f2a5d64d5ae9ee37305c08927ca8fbdc33a2d8dd2ae64
font_01_sfnt_off00008142.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8142 18044 bytes
SHA-256: 3cafdf99dccc4afa1deecf758d28f342e02167b9bdac520f5cdfda0d1041b97c

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