Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bee767c4a94c839…

MALICIOUS

PDF

42.2 KB Created: 2021-05-14 12:09:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 00365f6ec4f343d1fb9d2a3d3120b46c SHA-1: 4144719558518d55fad945e576e82b1da6a187fc SHA-256: 5bee767c4a94c839190720788b812545dfd51310ce39dc76c27e5cdcd34b8345
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains a large number of external links, many of which point to what appear to be SEO-optimized pages for downloading applications like Coin Master and Minecraft. The presence of a "download" button lure and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • 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.
  • 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.xyz/app/406889139/coin-master-apk-hack-3.5-8-game-hack
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/coin-master-free-spinv1-0apkpure-com-apk_GM406889139.pdf
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/how-to-get-free-tokens-in-minecraft-ps4_GM479516143.pdf
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/free-coin-master-spin-daily-link_GM406889139.pdf
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/free-minecraft-servers-to-join_GM479516143.pdf
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/robuxy-com-generator_GM431946152.pdf
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/download-coin-master-hack-apk_GM406889139.pdf
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/minecraft-for-free-apk_GM479516143.pdf
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/roblox-robux-hack-generator_GM431946152.pdf
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/how-to-get-hacks-on-roblox_GM431946152.pdf
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/get-me-robux-for-free_GM431946152.pdf
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdf
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/get-free-spins-in-coin-master_GM406889139.pdf
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/coin-master-hack-fast-org_GM406889139.pdf
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/how-to-hack-roblox-for-robux_GM431946152.pdf
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/how-to-get-free-roblox-money_GM431946152.pdf
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/wizard-hacks_GM479516143.pdf
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/coin-master-free-spins-through-coin-pop_GM406889139.pdf
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/roblox-hack-site_GM431946152.pdf
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdf
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b0f.bin
e01b33884c9f5d6026a43afb4a4fcf85eb638b2e433c7541ed4c6753876ffa18		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B0F 24012 bytes
font_01_sfnt_off000081c0.bin
b9b6adf449100deb59ed95ea3ad5e02aaf3681432d01b6b7dc02955a5f5017fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81C0 18476 bytes

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