Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ca297db127c032d…

MALICIOUS

PDF

43.2 KB Created: 2021-04-29 07:06:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 41c83ede014d6234cfe2c3f2b38f9df6 SHA-1: 87efda788288f129d0686192d2f4948e87ed761a SHA-256: 9ca297db127c032d8f206bd558a0fb10cdc0457e1d5c3e084fd721168b837932
82 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and a call-to-action that impersonates the Amazon brand, directing users to download game-related content from a non-Amazon domain. This indicates a phishing attempt designed to trick users into downloading potentially harmful files. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9868

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.xyz/app/431946152/how-to-get-free-faces-on-roblox-no-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.xyz/app/431946152/how-to-get-free-faces-on-roblox-no-download-game-hack PDF link annotation
    • https://www.bolsoshf.com/ckfinder/userfiles/files/undetected-cheat-engine-for-roblox.pdfIn PDF document text
    • https://www.bolsoshf.com/ckfinder/userfiles/files/roblox-scp-foundation-model-free.pdfIn PDF document text
    • https://www.bolsoshf.com/ckfinder/userfiles/files/how-to-hack-roblox-catalog.pdfIn PDF document text
    • https://www.bolsoshf.com/ckfinder/userfiles/files/free-cookie-codes-for-roblox.pdfIn PDF document text
    • https://www.bolsoshf.com/ckfinder/userfiles/files/roblox-shirt-template-free.pdfIn PDF document text
    • https://www.bolsoshf.com/ckfinder/userfiles/files/free-decals-for-roblox-work-at-a.pdfIn PDF document text
    • https://www.bolsoshf.com/ckfinder/userfiles/files/soros-italian-restaurant-free-roblox.pdfIn PDF document text
    • https://www.bolsoshf.com/ckfinder/userfiles/files/how-to-hack-roblox-jailbreak-keycard.pdfIn PDF document text
    • https://www.bolsoshf.com/ckfinder/userfiles/files/free-gamepass-roblox-script-not-patched.pdfIn PDF document text
    • https://www.bolsoshf.com/ckfinder/userfiles/files/uirbx-club-free-robux.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004040.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4040 24520 bytes
SHA-256: e52cf2aafd0b6e7a13b4c0b3d8a48ec461e2cb2797526e237b4286a7c32b6b05
font_01_sfnt_off00007873.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7873 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off0000851b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x851B 18788 bytes
SHA-256: cd774f1fbe2dc32609e992713ca04e3b5c3f965795dd66546401be0cb6349b47

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