Malicious PDF — malware analysis report

Static analysis result for SHA-256 348b5600169aaefa…

MALICIOUS

PDF

45.1 KB Created: 2021-06-03 19:33:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 66d038eb3bcfe4eb228e9ebf3e31d448 SHA-1: dc8ddee38bc8c090a685c4d8ee754389cfc6ed32 SHA-256: 348b5600169aaefa7971ac69b697b0da7cc1428535c85f9d4e1aae4a7a41813f
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for game hacks and free items, directing users to external URLs. It exhibits characteristics of a link farm, with numerous embedded links to other PDF files hosted on similar domains, likely for SEO manipulation or to distribute further malicious content. While no scripts were directly extracted, the PDF structure and embedded URIs suggest a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.online/app/479516143/how-to-get-minecraft-windows-10-for-free-game-hack PDF link annotation
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/a-lot-of-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/hack-coin-master-for-iphone_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/free-spin-sites-for-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/hack-download_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/is-tiktok-free-on-iphone_GM835599320.pdfIn PDF document text
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/free-executors-for-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/hack-coin-master-game-download_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/free-coin-master-spins-link-download_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/robux-free-gift-card-org-hack_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_004_off000053b4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53B4 25456 bytes
SHA-256: 6f9142a7408061ac123b814147c8d33a692abc79d625f7a4a69191c275b03c3a
font_01_sfnt_off00008cd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CD2 18524 bytes
SHA-256: 9c72abd8977421c50785b44719a9a0d208cbbe36d089006de9c81bf453dbcd54

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