Malicious PDF — malware analysis report

Static analysis result for SHA-256 30fe45b615d55766…

MALICIOUS

PDF

49.0 KB Created: 2020-04-16 06:42:00 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9b66484fe514e87f9f2a696bdf2bd5a2 SHA-1: 419c0b58507a3cff6ed0d9ecff9ad44d84495b12 SHA-256: 30fe45b615d5576696746be435ab5696d10f1801bab0fac9905e5c8c5c8fd9f3
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to domains that appear to be part of a link farm. The document body, though heavily obfuscated, contains text suggesting it is an 'apartment lease contract pdf'. This indicates a social engineering lure to trick users into visiting potentially malicious websites. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://wedding--photographer.com/uploads/1/3/1/4/131483454/131483454.html#apartment+lease+contract+pdf
    • http://brightvisionj.com/uploads/1/3/0/3/130379429/ef7695fa26cf7a2.pdf
    • http://greenlandcaregroup.com/uploads/1/3/0/4/130435658/lagofuvovu-puteliwunedi.pdf
    • http://curatedbychrista.com/uploads/1/3/0/6/130604140/f368e5b53dad.pdf
    • http://twbowen.com/uploads/1/3/0/6/130620961/zafunud-kolup.pdf
    • http://thomasmurphylaw.com/uploads/1/3/0/7/130739381/086f82ec68.pdf
    • http://estg.com/uploads/1/3/0/6/130604010/tinugopoxo_riwabelobazotew.pdf
    • http://mavoitureselavetouteseule.com/uploads/1/3/0/5/130543671/04a3e.pdf
    • http://picacookie.com/uploads/1/3/1/1/131164278/5ee5d0a2e77420.pdf
    • http://partnersinrelief.com/uploads/1/3/0/6/130622005/jopimuwalisolo.pdf
    • http://goodshepherdelsatx.com/uploads/1/3/1/1/131163751/5084523.pdf
    • http://curatedbychrista.com/uploa
    • 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_off0000955c.bin
5ffd6fc1c0d2a427e95e6033c78b80e823ab3b0745b7cbf660ac18a777c5d638		 pdf-font-stream PDF embedded font (sfnt) at offset 0x955C 8640 bytes

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