Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a3050f58952906d…

MALICIOUS

PDF

47.9 KB Created: 2021-06-04 01:47:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: a2fc0dddc2d1cfd936ed4256737c069c SHA-1: 9eca9f0c5fcf45dc14cc9d62c25922dc2e495397 SHA-256: 2a3050f58952906deb5a8cd5f32519f500bb39674765e76279f7d3c243b2ff9d
82 Risk Score

Malware Insights

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

The PDF contains an embedded URI and multiple other URLs that point to sites offering game hacks and cheats, suggesting a lure to download malicious content. The heuristic for a password-protected archive lure indicates that the user might be instructed to enter a password to decrypt a payload, further supporting a malicious intent to deliver malware. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.online/app/479516143/minecraft-mobile-free-game-hack PDF link annotation
    • http://library.umuslim.ac.id//repository/coin-master-hack-tool-access-online-generator_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/roblox-cp_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-coin-master-spins-link-download_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/pubg-uc-seller_GM1330123889.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-spins-coin-master-site-wwwquoracom_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/minecraft-xbox-360-free_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/cm-spins_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/download-coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/how-to-get-free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005661.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5661 25696 bytes
SHA-256: bfce501ced82146c721ede87f1246271f74b9c2e120b42f7f47a905f4291a614
font_01_sfnt_off00008fdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FDB 2820 bytes
SHA-256: 34dd21cbcbbf8680f9624d5ddfa25e49232e6768200f74ddacb5347fd7a5f6dc
font_02_sfnt_off0000997b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x997B 17944 bytes
SHA-256: ce10a2b2c496b69fcf76f31cd4916c063e1dd9befde4055646c3ea28f41e8e8e

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