Malicious PDF — malware analysis report

Static analysis result for SHA-256 e17edc59fc414451…

MALICIOUS

PDF

43.1 KB Created: 2021-05-11 23:08:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 41fb727d970f02eeed3bcf475aae6ebb SHA-1: fb619f3fb5b36d903c3dcdb58b037028ad2ebc8c SHA-256: e17edc59fc414451612f113eda203e4f54016c2b9ab93304f74ab21f549df621
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains a large number of external links, many of which appear to be SEO-optimized for free game currency or cheats. The presence of a "download button" heuristic and a high ML classifier score indicate a malicious intent to redirect users to potentially harmful content. The primary IOC is the URL https://netcdn.xyz/app/479516143/toolbox-premium-apk-game-hack, which is presented as a download link.

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/479516143/toolbox-premium-apk-game-hack
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-no-survey_GM431946152.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/moonactive-coin-master-free-spins-link_GM406889139.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-cheat_GM406889139.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/can-i-get-minecraft-for-free_GM479516143.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/free-pet-snacks-coin-master_GM406889139.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/lazy-blocks-com-free-robux_GM431946152.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/coin-master-free-spin-download_GM406889139.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/free-spins-coin-master-2021_GM406889139.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/free-robux-website_GM431946152.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/www-roblox-com-robux-free_GM431946152.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/get-free-spins-coin-master-link_GM406889139.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/coin-master-links-free-spins_GM406889139.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/robux-free-gift-card-org-hack_GM431946152.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/coin-master-hack-android-root_GM406889139.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/get-free-spins-coin-master_GM406889139.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/robloxheroxyz-free-robux_GM431946152.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/minecraft-free-ios-2021_GM479516143.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/free-coin-master-gifts_GM406889139.pdf
    • http://elearningnew.mansasingkawang.sch.id/__statics/gudangsoal/files/hack-coin-master-free-spins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004db8.bin
facb3ab0fced5d62462fe0a59779d6de40a3c26e29b9452c473bb0b756c0001c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DB8 24272 bytes
font_01_sfnt_off00008541.bin
c6d8a8114917d0b571f99818de1ca5c122efce3e05b979e024ea7c59263b2da1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8541 18720 bytes

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