Malicious PDF — malware analysis report

Static analysis result for SHA-256 d17ca185812bfb7e…

MALICIOUS

PDF

44.7 KB Created: 2021-06-04 04:37:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 3b86c4c306e507b5840de458c88157fd SHA-1: d97f77cd91e3f47c510a431eb0e228d34357b5c8 SHA-256: d17ca185812bfb7ee8ed3d377a874caeda1359204e9e447fd7c5741a0e008099
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1071.001 Web Protocols

The PDF document contains embedded URLs and heuristics indicating brand impersonation for credential phishing, specifically impersonating Ebay. The primary malicious URL, https://netcdn.online/app/431946152/roblox-cheats-and-hacks-download-game-hack, is presented as a download for game cheats, which is a common lure for malware distribution. The document's structure and embedded links suggest it is designed to trick users into downloading and executing a second-stage payload.

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/roblox-cheats-and-hacks-download-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/roblox-cheats-and-hacks-download-game-hack PDF link annotation
    • http://lib.stimykpn.ac.id/repository/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/earn-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/robux-offers_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/how-to-downgrade-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-spin-and-coins-free_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-free-hats_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-link-daily-get-free-spins-amp_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-apk-mod-free-download_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-daily-free-spins-blog_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-exe_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/minecraft-apk-free-download-016-0_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/minecraft-free-download-apk-softonic_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-free-redeem-code_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/get-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-spin-link-hack_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
stream_004_off0000500f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x500F 26016 bytes
SHA-256: c2b663d9674c44bc7fd200ceb687b9c50bc0984cb447f04a7e5edf215fd06842
font_01_sfnt_off000089e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89E7 18956 bytes
SHA-256: 2215a12462701b11629c6335ffbd6094e3dfa6037ef7ac0000492b6b5fd0c9f6

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