Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d77e80dd37b9c34…

MALICIOUS

PDF

46.5 KB Created: 2020-04-04 11:17:45 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 75b55d5ff899301f20cb9062ae5a0b3f SHA-1: 42137a9fbff740d9950b0621f72d4090113758e5 SHA-256: 7d77e80dd37b9c34e28ef3462b53860b054ce5f725bc47bcf6e581a722c1f5eb
62 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links, such as http://abbepsychservices.com/uploads/1/3/0/7/130739182/130739182.html#etapas+de+la+educacion+en+mexico and http://madewithheart.org/uploads/1/3/1/3/131379353/vativ.pdf, are likely intended to manipulate search engine results or redirect users to malicious content. No scripts were extracted, and the document body is heavily obfuscated, but the link farm is a strong indicator of malicious intent.

Heuristics 3

  • 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
  • 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://abbepsychservices.com/uploads/1/3/0/7/130739182/130739182.html#etapas+de+la+educacion+en+mexico
    • http://madewithheart.org/uploads/1/3/1/3/131379353/vativ.pdf
    • http://diedrichproperties.com/uploads/1/3/0/2/130292110/doxojiguk.pdf
    • http://thelunakit.com/uploads/1/3/0/5/130538818/8519943.pdf
    • http://yourlistener.ca/uploads/1/3/0/6/130621200/5325f.pdf
    • http://jlwalshdesign.com/uploads/1/3/0/9/130969825/791029.pdf
    • http://empire-general.com/uploads/1/3/0/6/130621013/e61f44a70.pdf
    • http://changeisnowfitness.com/uploads/1/3/0/3/130323174/ab2cad6d25adf.pdf
    • http://gandersonhomes.com/uploads/1/3/0/8/130874518/kobagizo_sakakololivixe_pifapusukex.pdf
    • http://sublimationwholesaleblanks.com/uploads/1/3/0/5/130540405/8cff226cd7.pdf
    • http://travelingpaula.com/uploads/1/3/0/4/130476816/5105112.pdf
    • http://maverickvp.com/uploads/1/3/1/3/131383717/mokinekofine.pdf
    • http://sylvanqualitymeats.ca/uploads/1/3/0/5/130590431/rikidu.pdf
    • http://theartofsatoshi.com/uploads/1/3/0/7/130740477/383810de.pdf
    • http://rootfoodsnutrition.com/uploads/1/3/0/7/130776646/jurupolikuje.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_off00008b8d.bin
112d63df4373f09eedfe3924b63b3f1dc999d180c7d0eb75f72e59f4bf8d025f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B8D 8740 bytes

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