Malicious PDF — malware analysis report

Static analysis result for SHA-256 4edd0109cdd72e5a…

MALICIOUS

PDF

41.2 KB Created: 2021-05-12 15:06:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 0505e98408eae18432956e999415348f SHA-1: bbcd6027eb2d5f3a7beebd453cf74e294cdbb8b4 SHA-256: 4edd0109cdd72e5af7b09422ce0d2649fd08e44659475ae9dab86f16fc18a46a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on what appears to be a 'game hack' or 'free spins' generator. The primary malicious redirector URL identified is https://netcdn.xyz/app/406889139/hack-coin-master-free-spins-game-hack. The document body and embedded links suggest a social engineering tactic to drive traffic to potentially malicious sites, likely for further exploitation or malware delivery.

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/hack-coin-master-free-spins-game-hack In PDF document text
    • http://kundentest.de/images/how-to-change-your-name-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://kundentest.de/images/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://kundentest.de/images/coin-master-hack-online-link_GM406889139.pdfIn PDF document text
    • http://kundentest.de/images/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://kundentest.de/images/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://kundentest.de/images/minecraft-app-free-download_GM479516143.pdfIn PDF document text
    • http://kundentest.de/images/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://kundentest.de/images/how-to-get-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://kundentest.de/images/coin-master-village-3_GM406889139.pdfIn PDF document text
    • http://kundentest.de/images/free-roblox-followers-generator-2021_GM431946152.pdfIn PDF document text
    • http://kundentest.de/images/coin-master-34-4-hack_GM406889139.pdfIn PDF document text
    • http://kundentest.de/images/real-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://kundentest.de/images/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • http://kundentest.de/images/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://kundentest.de/images/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://kundentest.de/images/coin-master-spin-link-free-download_GM406889139.pdfIn PDF document text
    • http://kundentest.de/images/picture-roblox_GM431946152.pdfIn PDF document text
    • http://kundentest.de/images/free-robux-link_GM431946152.pdfIn PDF document text
    • http://kundentest.de/images/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://kundentest.de/images/free-robux-not-fake_GM431946152.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_off0000478b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x478B 24380 bytes
SHA-256: 3018a1d24350bb0198db9a7b202ef2e175e091a254575bc18e7a1f39f7f9bcb9
font_01_sfnt_off00007f4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F4E 18056 bytes
SHA-256: f90826bfe2bc71c0265d319a9184b169c06436e7d3915f152a6a7ecd0e51099f

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