Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1aefbdce0fe02a2…

MALICIOUS

PDF

45.9 KB Created: 2021-06-11 05:03:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: bfc3f97bf77fd9a7457a935a7c836cb2 SHA-1: 400e0a10b2d45ccc0dfefed8b5ed202eb6127823 SHA-256: c1aefbdce0fe02a2ab63604aa29d2d9b50d538b2d18df283dab05a6af9485ffd
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The document impersonates Facebook to lure users with a Roblox-related topic, directing them to a malicious URL. This is a common tactic for credential phishing or distributing further malware. The ML classifier strongly indicated maliciousness, and the presence of multiple suspicious URLs reinforces this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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/can-users-on-roblox-make-free-hats-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/can-users-on-roblox-make-free-hats-game-hack PDF link annotation
    • http://svadba-moda.kg/images/how-to-get-roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • http://svadba-moda.kg/images/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
    • http://svadba-moda.kg/images/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://svadba-moda.kg/images/roblox-rhythm-track-hack_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/www-robuxmaniac-free-robux_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/roblox-hack-2021-jailbreak_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/how-do-you-change-your-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://svadba-moda.kg/images/free-robux_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/roblox-advanced-warfare-tycoon-cheat-codes_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://svadba-moda.kg/images/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://svadba-moda.kg/images/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • http://svadba-moda.kg/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/free-robux-gen-no-verification_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/free-robux-exe_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/free-robux-from-watching-ads_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/roblox-cheat-clients_GM431946152.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_off00004ee4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EE4 28964 bytes
SHA-256: abe9cf05e7f28b82c45db44c106fc1fa7d1d99d329f3083247a6ff24ed978d3b
font_01_sfnt_off00008f7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F7A 18832 bytes
SHA-256: 16662b2df2e1b8348de3be2fb41c1642ada8a900e5f68b1ca9179f34d43fda11

Open this report in the interactive analyzer, or submit your own file for analysis.