Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cbb1fb0a4fab753…

MALICIOUS

PDF

123.8 KB Created: 2022-06-16 19:16:59 Authoring application: Api Terms Of Use Template melanie (via FPDF 1.82) First seen: 2022-07-15
MD5: d666e13a00a17dcacffea49066277b60 SHA-1: 859fc4fa35820b7868233ca037ffc4b30c90fdc4 SHA-256: 2cbb1fb0a4fab7536f51f56d7693f733da229f1599b3bcc20274cacae11e2ad8
70 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF document contains multiple embedded links, some of which are invisible and repeated, designed to trick the user into downloading a payload. The heuristic 'PDF_REPEATED_PAYLOAD_LINK_LURE' indicates that these links point to the URL 'http://eminemreactor.site/Api-Terms-Of-Use-Template/pdf/www.marklittler.com'. The 'SE_INVOICE_LURE' heuristic suggests the document is disguised as an invoice or payment-related document to increase the likelihood of user interaction. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier clean score 0.0012

Heuristics 3

  • Invisible/repeated PDF links deliver payload file critical PDF_REPEATED_PAYLOAD_LINK_LURE
    PDF uses invisible link annotations and points to a direct payload download. Repeated invisible links or lure-like payload names such as document/unlock/verify archives match malware-delivery PDF carriers where the page is only a prompt and the real payload is fetched from the linked URL.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://eminemreactor.site/Api-Terms-Of-Use-Template/pdf/www.marklittler.com
    • http://eminemreactor.site/Api-Terms-Of-Use-Template/doc/www.marklittler.com
    • https://www.marklittler.com/wp-content/uploads/formidable/16/spanish-pocket-new-testament.pdf
    • https://www.marklittler.com/wp-content/uploads/formidable/16/aspca-position-statement-on-pit-bulls.pdf
    • https://www.marklittler.com/wp-content/uploads/formidable/16/black-tank-flush-modification.pdf
    • https://www.marklittler.com/wp-content/uploads/formidable/16/eu-driving-licence-in-uk-post-brexit.pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_025_off0001e2c6.bin
43b13684882d332187dbe2691d5e4f64c33a98e381a4dc2316374ba1b923b47c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1E2C6 76950 bytes

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