Malicious PDF — malware analysis report

Static analysis result for SHA-256 5980d18e16a4a127…

MALICIOUS

PDF

41.6 KB Created: 2021-05-13 05:47:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 4bbd3837a5132c8eb1e77525af31ce63 SHA-1: d4fc437d39b5e7791dc7700ac1ba31321d74b561 SHA-256: 5980d18e16a4a127c1c1eb91eb3eb5d24e4da1732d2bc29bf9f0e64e48e850e9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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/406889139/hack-coin-master-download-game-hack PDF link annotation
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/free-roblox-adopt-me-accounts_GM431946152.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-fast_GM406889139.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/how-to-make-robux_GM431946152.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-free-daily-rewards_GM406889139.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-spin-link-2021_GM406889139.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/roblox-t-shirt-free_GM431946152.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/are-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/robux-boost_GM431946152.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/is-minecraft-java-free_GM479516143.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-download-android_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
stream_003_off000048f9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48F9 24120 bytes
SHA-256: e9f0cfcbf6b48bd94a35b4c2065a3ba102169f9e2416e2e9585c3e72ae7b64e4
font_01_sfnt_off00007ff2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FF2 18296 bytes
SHA-256: 5719de20b3226af2bdcbf6ff002d7cecdad7590bfdf105e8aa16a01d29572d54

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