Malicious PDF — malware analysis report

Static analysis result for SHA-256 7abaf99f7649095d…

MALICIOUS

PDF

103.5 KB Created: 2022-07-01 14:01:12 Authoring application: Outback Vision Protocol Pdf chikrii (via FPDF 1.82) First seen: 2022-07-15
MD5: da5dad478b0f69860a260bd5db9e5be0 SHA-1: bd8e9f3ecc221e8a152744bafe77ed3ac02b598a SHA-256: 7abaf99f7649095d9a4f230770c3c63b2c8a79c798bdf613618384fb7371904f
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a critical heuristic indicating repeated invisible links designed to lure the user to download a payload from http://starkave.site/Outback-Vision-Protocol-Pdf/pdf/www.aquilatrucks.com. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to deliver a malicious payload, likely via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier clean score 0.0007

Heuristics 2

  • 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.
  • 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://starkave.site/Outback-Vision-Protocol-Pdf/pdf/www.aquilatrucks.com
    • http://starkave.site/Outback-Vision-Protocol-Pdf/doc/www.aquilatrucks.com
    • https://www.aquilatrucks.com/wp-content/uploads/formidable/168/olav-aaen-clutch-tuning-handbook-pdf.pdf
    • https://www.aquilatrucks.com/wp-content/uploads/formidable/168/martins-point-pharmacy-formulary.pdf
    • https://www.aquilatrucks.com/wp-content/uploads/formidable/168/bank-of-america-special-credit-card-offers.pdf
    • https://www.aquilatrucks.com/wp-content/uploads/formidable/168/ccc-certificate-sample-pdf.pdf
    • https://www.aquilatrucks.com/wp-content/uploads/formidable/168/chain-of-memories-recommended-level.pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_015_off000192c1.bin
43b13684882d332187dbe2691d5e4f64c33a98e381a4dc2316374ba1b923b47c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x192C1 76950 bytes

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