Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc8fcf1183ab362a…

MALICIOUS

PDF

34.3 KB Created: 2021-07-02 00:24:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 77bf429ad415a0656bf05e3dd163e742 SHA-1: 1f406a0356c8fe4a0e81fdc70d47e93067892dec SHA-256: dc8fcf1183ab362afc045c642095059815ca85b10f27563694a166bf096891f2
82 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and heuristics indicating it is designed to lure users into downloading a malicious file, likely related to game hacks or cheats. The 'SE_BROWSER_INSTALL_LURE' heuristic suggests the document prompts the user to install something, which is a common tactic for malware distribution. The primary IOC is the external URL found in the document, which likely hosts the secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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 http://netcdn.co/app/431946152/map-kat-roblox-hack-game-hack PDF link annotation
    • https://pt-mataram.go.id/perpustakaan/repository/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/free-roblox-website_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/coin-master-hacksco_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/roblox-a_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/hack-someones-account-roblox_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/coins-master-hack_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/cheating-on-broken-bones-roblox_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/5-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/coin-master-hack-mod-apk-unlimited-spins_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/coin-master-free-coins-spins_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/coin-master-hack-apk-android-1_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/cryptic-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/free-robux-cards-tk_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/hacker-vs-noob-roblox_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/roblox-for-free-no-human-ferification_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/link-for-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/roblox-robber-hack_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/fb-coin-master-hack_GM406889139.pdfIn 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
font_00_sfnt_off00002ef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EF7 22360 bytes
SHA-256: de94e6aa64c62bea4df29814d58a13dba4787c95cbd80832200e4a4cbd24a4a5
font_01_sfnt_off000060be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60BE 19132 bytes
SHA-256: 70f130a73101ea068876b9cacd0274e88ff398f2a3917384322461211c6efe10

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