Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfce2506e6756dee…

MALICIOUS

PDF

35.1 KB Created: 2021-06-29 07:51:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 4d72be87c8c7f602658775e74159ca28 SHA-1: bd980d18af728d9a9444fb002904d0df9706f722 SHA-256: cfce2506e6756deeba16c3fd4cce63be88c08732603d5cd1e3401131477cec4d
82 Risk Score

Malware Insights

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

The PDF document impersonates Facebook to lure users with a "Free Gift Card Codes Generator Roblox" offer, directing them to a malicious URL. The ML classifier strongly flagged this PDF as malicious, and the embedded URL is associated with brand impersonation for credential phishing. No scripts were extracted from this sample, but the presence of multiple malicious URLs indicates a phishing or malware distribution attempt.

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/free-gift-card-codes-generator-roblox-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/free-gift-card-codes-generator-roblox-game-hack PDF link annotation
    • http://perpus.polimarim.online/repository/roblox-prison-break-hacks_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-roblox-jacket_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-hack-mod-apk-35-8_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-daily-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-animatronic-tycoon-cheat-codes_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-clown-van-hack_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/cheat-pour-ultimate-driving-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-roblox-accounts-without-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-robux-codes-w018_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-x-ray-hack-autohotkey-download_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/minecraft-education-edition-free-download_GM479516143.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-get-free-clothes-on-roblox-on-your-phone_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/cheat-engine-kill-al-script-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-hack-deutsch-ohne-handynummer_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-hack-knives-in-roblox-assassin_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-spin-free_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
font_00_sfnt_off00003058.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3058 23104 bytes
SHA-256: 3c901f513805b24201acd5fec94d2bfcca8fe308627c3bb402b53a78142aacfe
font_01_sfnt_off00006414.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6414 19048 bytes
SHA-256: 68818696acd1121974a5433ff82c2aa9c238d5b7e38d813a18a1109308b5e46e

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