Malicious PDF — malware analysis report

Static analysis result for SHA-256 12f014c9293d9e9c…

MALICIOUS

PDF

35.1 KB Created: 2021-06-25 18:45:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 39cf3f4dd00cb745dbc2605bdb5c0919 SHA-1: ea0473c4483d96938e668059f1b089c1de2074ff SHA-256: 12f014c9293d9e9ca8c3131b1f9d36aa2d43f7299586fe7f8b571c6aa296f3b2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains embedded URLs and a document body that attempts to lure users with the promise of free Robux, impersonating PayPal. The primary URL, http://netcdn.co/app/431946152/2021-how-to-get-free-robux-with-paste-bin-game-hack, is hosted on a domain unrelated to PayPal, indicating a phishing attempt. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.co/app/431946152/2021-how-to-get-free-robux-with-paste-bin-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.co/app/431946152/2021-how-to-get-free-robux-with-paste-bin-game-hack PDF link annotation
    • http://opac.salatiga.go.id/slims7/repository/hack-para-roblox-facil_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/free-spins-coin-master-links-blogger_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/minecraft-apk-download-v1-144-2-free_GM479516143.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-robux-no-subscription_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/coin-master-apk-hack-download_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/free-robux-link_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-girl-hairs-free_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/coin-master-official-website_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-fly-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/new-hack-for-roblox-deathrun-2021-pc-download_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/cool-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/play-coin-master-online-free_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-hack-account-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-get-minecraft-on-chromebook-for-free_GM479516143.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_off00002f68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F68 22428 bytes
SHA-256: b0f18cece32ecf5dd10b584dd5c0d2233a0fe68221b155bbd8370cc9e9f76220
font_01_sfnt_off00006141.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6141 20024 bytes
SHA-256: e0bd1f671a0c9071c67f15a376481ad21633609854010e89a84cbe28d831818c

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