Malicious PDF — malware analysis report

Static analysis result for SHA-256 10d2e3925b0945ab…

MALICIOUS

PDF

43.7 KB Created: 2021-05-19 22:24:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ea50f479a8c79ecd93e0bae7022c544b SHA-1: 2d4abb96df2ddfe491dac135464a121bb262992b SHA-256: 10d2e3925b0945ab356834e8eced699368c42061c6e0210a27a4813d1630e2d4
82 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and lures users with promises of in-game rewards, such as 'Pokemon Go Free Stardust'. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic suggests the document may be part of a multi-stage attack where a password is provided to decrypt a malicious archive. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/1094591345/pokemon-go-free-stardust-game-hack
    • http://www.elibrary.perludem.org/repository/coin-master-free_GM406889139.pdf
    • http://elibrary.perludem.org/repository/minecraft-kill-aura_GM479516143.pdf
    • http://www.elibrary.perludem.org/repository/minecraft-cheat-client_GM479516143.pdf
    • http://elibrary.perludem.org/repository/facebook-coin-master_GM406889139.pdf
    • http://www.elibrary.perludem.org/repository/free-coin-coin-master_GM406889139.pdf
    • http://www.elibrary.perludem.org/repository/http-blackgamesus-coinmasterhack_GM406889139.pdf
    • http://www.elibrary.perludem.org/repository/coin-master-village-3_GM406889139.pdf
    • http://www.elibrary.perludem.org/repository/smart-lodhi-coin-master-hack_GM406889139.pdf
    • http://elibrary.perludem.org/repository/pubg-uc-sale_GM1330123889.pdf
    • http://elibrary.perludem.org/repository/coin-master-hack-review_GM406889139.pdf
    • http://www.elibrary.perludem.org/repository/can-i-get-robux-for-free_GM431946152.pdf
    • http://elibrary.perludem.org/repository/pubg-600-uc-in-pakistani-rupees_GM1330123889.pdf
    • http://elibrary.perludem.org/repository/coin-master-hack-2021-android-apk_GM406889139.pdf
    • http://elibrary.perludem.org/repository/free-minecraft-account-and-password-2021_GM479516143.pdf
    • http://elibrary.perludem.org/repository/robux-no-verification_GM431946152.pdf
    • http://elibrary.perludem.org/repository/how-can-you-get-free-robux_GM431946152.pdf
    • http://elibrary.perludem.org//repository/roblox-prison-life-hack_GM431946152.pdf
    • http://elibrary.perludem.org//repository/oprewards-free-robux_GM431946152.pdf
    • http://elibrary.perludem.org/repository/roblox-re_GM431946152.pdf
    • http://elibrary.perludem.org/repository/free-spins-on-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004757.bin
df9d4f27a796bedd21b4410c791989490f01753c4e750e8cc335ee1a9e908860		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4757 23980 bytes
font_01_sfnt_off00007dd8.bin
3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DD8 2840 bytes
font_02_sfnt_off0000878a.bin
05ab2d7e6878636a722311d0939dadabd8583b191ccca14439b5e16997638c20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x878A 18488 bytes

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