Malicious PDF — malware analysis report

Static analysis result for SHA-256 011e2eb3694cbbcf…

MALICIOUS

PDF

45.1 KB Created: 2021-06-03 09:27:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 94baf1786f03d046934e5a8592655bc9 SHA-1: 325ec8d74399b1e6b4ec527e37331748463fac60 SHA-256: 011e2eb3694cbbcf382ac21f452f839cccd76376e4137bf73fa538681bec259c
102 Risk Score

Malware Insights

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

The document contains multiple embedded URLs and a prominent link to a site offering a 'Coin Master Hack Spins Apk Download'. The heuristic 'SE_SECRET_RECOVERY_LURE' suggests the document may also attempt to phish for sensitive information like private keys or passwords, disguised as game-related recovery data. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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.online/app/406889139/coin-master-hack-spins-apk-download-game-hack PDF link annotation
    • http://lib-smansumsel.sch.id/repository/how-to-earn-robux_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-robux-games_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/robux-free-com_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/worst-roblox-avatars_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/hack-the-coin-master-game_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/roblox-data-breach_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/coin-master-mod-version-free-download-ios_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/how-to-robux_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/coin-master-hackcom-xyz_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/cool-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/give-free-robux_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-minecraft-skins-pe_GM479516143.pdfIn PDF document text
    • https://coinmasterspinandcoin.comIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000533b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x533B 26000 bytes
SHA-256: a5905c9c924c533c0661fa5ce21d9fb014c72bb43a37418863953d3d5597aeea
font_01_sfnt_off00008cef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CEF 18472 bytes
SHA-256: 791253267e47a56e08c5233673e0527cc39705ce663f368d2087110d8ca61f39

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