Malicious PDF — malware analysis report

Static analysis result for SHA-256 48160df783c3eae0…

MALICIOUS

PDF

32.8 KB Created: 2020-05-31 19:08:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ee65f6147f30515ca4321e616fbf0bdb SHA-1: 5fe1daf9bfcb54a14f71336adf2d7324669d14f2 SHA-256: 48160df783c3eae03a972142bfb03f59dd207a63d22729eab3ca66333f514ead
94 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier as malicious. Static analysis revealed a large number of embedded external links, a technique often used for SEO farms or to redirect users to malicious sites. The document body contains text related to 'Axxo movies official website' and mentions the authoring application, but the primary malicious activity appears to be the extensive link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://executivetaxsolutions.net/uploads/1/3/0/2/130287295/130287295.html#axxo+movies+official+website
    • http://wlanspots.de/uploads/1/3/0/5/130551186/berokanasapigulekara.pdf
    • http://swkfrenchbulldogs.com/uploads/1/3/0/6/130621636/1ee1dc2509d.pdf
    • http://doll-landfactory.site/uploads/1/3/1/8/131857690/5a5d3e017b.pdf
    • https://jupeveni.files.wordpress.com/2020/05/muporifosifare.pdf
    • https://kulovop.files.wordpress.com/2020/05/bezixelok.pdf
    • https://zibebuti.files.wordpress.com/2020/05/maxiledo.pdf
    • https://nelofejinuri.files.wordpress.com/2020/05/disotepedulixovati.pdf
    • https://wifobawixobi.files.wordpress.com/2020/05/velonujovakibo.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000564d.bin
8fe99531d9de9fe08cabbef2e8d179bb5e20e616c0c5785c222f3ddce174f138		 pdf-font-stream PDF embedded font (sfnt) at offset 0x564D 10044 bytes

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