Malicious PDF — malware analysis report

Static analysis result for SHA-256 aba88995327fe932…

MALICIOUS

PDF

43.7 KB Created: 2021-06-03 22:25:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 39b0d9e6ad5eff279715c549c7f50524 SHA-1: 45190facc6faa448d0b8c794c9866612013bb3a2 SHA-256: aba88995327fe932383e5230465d7ed3b3aa289d64b56d5f625bd4198168c47f
82 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and heuristics indicate a brand-impersonation credential phishing lure, specifically impersonating PayPal to trick users into clicking a link for free Robux. The primary malicious URL identified is https://netcdn.online/app/431946152/bux-free-robux-game-hack, which is likely intended to harvest user credentials. No scripts were extracted from this sample, but the presence of malicious URLs and the phishing lure strongly suggest a credential harvesting attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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: https://netcdn.online/app/431946152/bux-free-robux-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 https://netcdn.online/app/431946152/bux-free-robux-game-hack PDF link annotation
    • http://library.fk.upnvj.ac.id/repository/get-more-robux_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-fun-com-robux_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-spins-coin-master-apple_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-groups-2021_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/robux-generator-that-works_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-master_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-tiktok-followers-app_GM835599320.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-tiktok-followers-no-verification-or-survey_GM835599320.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-free-rare-cards_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/1x1x1x1-roblox-id_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/robuxhub-net_GM431946152.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
stream_004_off00005022.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5022 24664 bytes
SHA-256: b4c78c873d74ca10ded69d3b01d57abd2ce4f109e92be6ce0b270646be42a2b4
font_01_sfnt_off00008924.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8924 18012 bytes
SHA-256: 48dadac1a540eb24f39d188e0eb07df2fd2c4cea4184d8a92cbd726ce4786484

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