Malicious PDF — malware analysis report

Static analysis result for SHA-256 94a8ea6437c7dcee…

MALICIOUS

PDF

35.6 KB Created: 2021-07-19 14:21:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 34b81b748dd5a27fdd663f38e2ab3115 SHA-1: cc63203668f8f2c0cb520f9ea4786524de2e9f3b SHA-256: 94a8ea6437c7dcee65e8be2666eb5062629483a7ce85e0c3fd118721286fe26a
82 Risk Score

Malware Insights

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

The document contains multiple embedded URLs and a call-to-action button, impersonating brands to trick users into clicking malicious links. The primary lure is for 'Hack Tiktok Fans Free' and other game-related cheats, directing users to external sites. The ML classifier strongly flagged this PDF as malicious, supporting the phishing and credential harvesting intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: http://netcdn.tw/app/835599320/hack-tiktok-fans-free-game-hack.
  • 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.tw/app/835599320/hack-tiktok-fans-free-game-hack PDF link annotation
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/minecraft-windows-10-edition-free-download_GM479516143.pdfIn PDF document text
    • http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/free-tiktok-accounts_GM835599320.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000359e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x359E 23612 bytes
SHA-256: 7264372372c5c8eea2438d325f66f23237d96dabeac979d286bb5008bcee1128
font_01_sfnt_off00006b07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B07 17684 bytes
SHA-256: 3b18324811ff9b2016b67c954de883c0131a9d703a91aa0a24a49898f2a8c27e

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