Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb953a4cab92020a…

MALICIOUS

PDF

43.0 KB Created: 2021-05-14 13:08:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 886c2eeafb2a0c4bc979d25ac7757b9a SHA-1: a00c2b2d450f6ff845f40911ab4d72415e37f85b SHA-256: eb953a4cab92020aa0d94776b104c3072372364c6d95ad1d703fa3255c432299
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, many of which point to other PDF files hosted on external domains. The document body and embedded links suggest a lure for game-related cheats or hacks, likely intended to trick users into downloading further malicious content or visiting compromised sites. The ML classifier strongly indicated maliciousness.

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-real-hack-game-hack
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/synapse-roblox-free_GM431946152.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-spin-ios_GM406889139.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/coin-master-spin-hack-2021_GM406889139.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/online-coin-master-free-spin-app_GM406889139.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/coin-master-free-coins-no-human-verification_GM406889139.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/free-spin-coin-master-link-2021_GM406889139.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/is-roblox-free-on-xbox_GM431946152.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/coin-master-hacks-and-cheats_GM406889139.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/free-links-for-coin-master-2021_GM406889139.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/free-2021-robux_GM431946152.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/free-roblox-gift-card_GM431946152.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/free-robux-com-real_GM431946152.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/coin-master-heaven-daily-free-spins_GM406889139.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/how-to-hack-people-in-roblox_GM431946152.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-android-1_GM406889139.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/roblox-password-hacker_GM431946152.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/free-premium-roblox_GM431946152.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-ios_GM406889139.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/how-to-hack-any-roblox-account_GM431946152.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d70.bin
abb2e7c07174c9a2815387ed5c8662a8756dce9f8f70d8fbd0a529970f992f03		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D70 25368 bytes
font_01_sfnt_off0000873d.bin
17f046e272c8ee70cc4b817224b52c180b33e2590cfcc2d916d545b5a6c5f49a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x873D 17788 bytes

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