Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5e73c1c5a3d7686…

MALICIOUS

PDF

42.7 KB Created: 2021-05-15 03:37:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 11023b8df612504af9f7b6875548bb51 SHA-1: aea86ffe63d25e9593be09f3760980fbc6bd5626 SHA-256: e5e73c1c5a3d76868ec0eb01edd709253610a534e2a85332d1e25f2a5d0609c4
82 Risk Score

Malware Insights

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

The document contains heuristics indicating an advance-fee scam lure, combined with embedded links to external resources. The primary link, https://netcdn.xyz/app/431946152/roblox-skin-free-game-hack, suggests a lure for game-related cheats or hacks, which is a common method for distributing malware. The presence of multiple PDF files hosted on elearning.mtsn8madiun.sch.id further supports the distribution of potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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/431946152/roblox-skin-free-game-hack
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox_GM431946152.pdf
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/free-coin_GM406889139.pdf
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/minecraft-free-ios_GM479516143.pdf
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-2021_GM479516143.pdf
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/oprewards-free-robux_GM431946152.pdf
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/coin-master-hack-2021-apk_GM406889139.pdf
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/roblox40com-robux_GM431946152.pdf
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/how-to-get-free-mods-in-minecraft_GM479516143.pdf
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-35-18_GM406889139.pdf
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/free-minecraft-resource-packs_GM479516143.pdf
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/how-to-hack-robux_GM431946152.pdf
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/free-printable-minecraft-coloring-pages_GM479516143.pdf
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/blox-pink-robux-free_GM431946152.pdf
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/coin-master-3rd-village-free-2021-gift-card_GM406889139.pdf
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/get-robux-today_GM431946152.pdf
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/how-to-free-robux_GM431946152.pdf
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/how-to-get-free-golden-card-in-coin-master_GM406889139.pdf
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdf
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/free-coin-master-spins-no-human-verification_GM406889139.pdf
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/how-do-you-download-minecraft-for-free_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004adb.bin
c188aef221888c4540fd7a24431617f82640232c7c57ef5d3758ce8f4d1a1534		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4ADB 25092 bytes
font_01_sfnt_off000084e4.bin
6f613c146b2caf8aa71dfdba399286dfcc190b8555f8633d10d72eb14be7938a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84E4 18236 bytes

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