Malicious PDF — malware analysis report

Static analysis result for SHA-256 992755d9a2e06210…

MALICIOUS

PDF

53.0 KB Created: 2021-06-10 17:27:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c774a976d8c10f1feeeaf32fb7654acb SHA-1: d2f23357ec9a69677fecbb7b11810d17d9eac8e2 SHA-256: 992755d9a2e06210044a1f00936f5235268772c556d0367e06ecca4a79460e20
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free in-game items, specifically for Roblox, and includes an embedded URL pointing to a suspicious domain. The ML classifier also flagged this PDF as malicious. The presence of a call-to-action button and instructions for handling password-protected archives suggest an attempt to bypass security measures and deliver a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9616

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/how-to-get-free-hats-on-roblox-game-hack
    • http://halitbayramoglu.com.tr/images/minecraft-texture-packs-free-download_GM479516143.pdf
    • http://halitbayramoglu.com.tr/images/free-views-on-tiktok_GM835599320.pdf
    • http://halitbayramoglu.com.tr/images/coin-master-free-spins-blogspot_GM406889139.pdf
    • http://halitbayramoglu.com.tr/images/roblox-hack-tool_GM431946152.pdf
    • http://halitbayramoglu.com.tr/images/get-free-robux-com_GM431946152.pdf
    • http://halitbayramoglu.com.tr/images/free-minecraft-realm-codes_GM479516143.pdf
    • http://halitbayramoglu.com.tr/images/free-robux-no-survey_GM431946152.pdf
    • http://halitbayramoglu.com.tr/images/coin-master-free-spins-8-14-2021_GM406889139.pdf
    • http://halitbayramoglu.com.tr/images/how-to-walk-through-walls-on-roblox-useing-cheat-engine_GM431946152.pdf
    • http://halitbayramoglu.com.tr/images/wwwcoin-master-hack-apk_GM406889139.pdf
    • http://halitbayramoglu.com.tr/images/weird-roblox_GM431946152.pdf
    • http://halitbayramoglu.com.tr/images/how-to-get-more-spins-on-coin-master-for-free_GM406889139.pdf
    • http://halitbayramoglu.com.tr/images/how-to-make-cheat-engine-undetectable-by-roblox_GM431946152.pdf
    • http://halitbayramoglu.com.tr/images/coin-master-mod-apk-free-download-for-android_GM406889139.pdf
    • http://halitbayramoglu.com.tr/images/roblox-music-cheat-codes_GM431946152.pdf
    • http://halitbayramoglu.com.tr/images/free-robux-generator-no-human-verification-2021_GM431946152.pdf
    • http://halitbayramoglu.com.tr/images/free-robux-no-verification-no-survey_GM431946152.pdf
    • http://halitbayramoglu.com.tr/images/free-robux-generator-com-roblox-hack_GM431946152.pdf
    • http://halitbayramoglu.com.tr/images/free-robux-master_GM431946152.pdf
    • http://halitbayramoglu.com.tr/images/free-robux-no-offers_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051ba.bin
c85281df98a12b5e0d6bf333c60bf399bfd4bae0fe40a383b35bb220740c4f0e
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51BA 27116 bytes
font_01_sfnt_off0000916d.bin
e6d68e720ea5acf9dccbf7ffde18db6f65c62a99ab7725aa43e30329033a7787
pdf-font-stream PDF embedded font (sfnt) at offset 0x916D 8132 bytes
font_02_sfnt_off0000ac59.bin
f9b9939c38b76b443be916ca51f6b578d8365b374db70a09f9dd3538b986228f
pdf-font-stream PDF embedded font (sfnt) at offset 0xAC59 18444 bytes