Malicious PDF — malware analysis report

Static analysis result for SHA-256 c60218bd32b8d3fa…

MALICIOUS

PDF

45.0 KB Created: 2021-06-11 04:35:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 454242c96f051ca617177995ba46aa6f SHA-1: 8b62bc87f02587f66bc567f394207c1cb8a57095 SHA-256: c60218bd32b8d3faf60da8b486287a71830ea5cd95fdb46ad18a58e7e8c9449c
82 Risk Score

Malware Insights

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

The PDF document impersonates Netflix to trick users into clicking a link that leads to a download for a game hack. The embedded URL and the document body content both point to a lure for game cheats, which is a common tactic for distributing malware. The ML classifier strongly indicated maliciousness.

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.tw/app/431946152/razzberry-roblox-hack-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.tw/app/431946152/razzberry-roblox-hack-game-hack PDF link annotation
    • http://www.access-coiffure-tours.fr/images/today-coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/how-to-get-free-skins-on-counter-blox-roblox-offensive_GM431946152.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/roblox-devil_GM431946152.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/coin-master-hacked-apk-download-for-android_GM406889139.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/hack-xp-net-coin-master_GM406889139.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/coin-master-cracked-apk-free-download_GM406889139.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/100-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/legit-coin-master-hack-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/roblox-jailbreak-money-cheat_GM431946152.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/how-to-download-minecraft-for-free-on-iphone_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
stream_004_off000050cf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50CF 25748 bytes
SHA-256: a3e91f389d90aca85ee45746997e17a721dde89aa3bc67ec6f761d66435cad99
font_01_sfnt_off00008c81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C81 18444 bytes
SHA-256: 37b5e705219e40b3fa0a0e3af95914d2e920fe71bc34c0cd313ca5b113deab72

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