Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c10a2d9859de131…

MALICIOUS

PDF

43.7 KB Created: 2021-05-14 19:07:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 59c097e000db87e22b7e5a74b11920c6 SHA-1: a05704c17d04ed1cae61c94e58ce48c36af2ab2a SHA-256: 7c10a2d9859de131ba2bc5536ad7dbf5460faea5cb5352112cf9dfc6769bee87
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded links, identified as a link farm, that point to websites offering cheats and hacks for games like Coin Master. 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. While no scripts were directly extracted, the PDF structure and embedded URLs strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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-free-spin-and-coin-link-haktuts-hacking-news-game-hack
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/working-coin-master-hack_GM406889139.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/free-robux-websites-no-human-verification_GM431946152.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/ear-free-spins-for-coin-master_GM406889139.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/hack-to-send-gold-cards-on-coin-master_GM406889139.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/free-coin-and-spin-for-coin-master_GM406889139.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/earn-rbx_GM431946152.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/coin-master-hack-pro_GM406889139.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/moonactive-free-spins-coin-master_GM406889139.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/300-daily-free-spins-coin-master_GM406889139.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/play-coin-master-online-free_GM406889139.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/get-free-robux-no-verification_GM431946152.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-2021-easy_GM431946152.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/free-coins-coin-master_GM406889139.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/free-robux-no-download_GM431946152.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/free-minecraft-skins_GM479516143.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-verifying-2021_GM431946152.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/free-robux-gift-card-generator_GM431946152.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/how-can-i-get-free-robux_GM431946152.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-android_GM431946152.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/how-do-you-earn-free-coins-for-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004e28.bin
1aa62965e4e649069a9f00aeabcfef95e65e413ae1afee3f627219f09c145072		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E28 24632 bytes
font_01_sfnt_off000086f3.bin
ef8f09fc3c17cc4f26b4837a2aef37de344b1ca430b1a31f5cb27c991d5625de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86F3 18824 bytes

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