Malicious PDF — malware analysis report

Static analysis result for SHA-256 e38a48dc4fed319b…

MALICIOUS

PDF

35.4 KB Created: 2020-04-13 05:48:33 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 03cac00c1772de362d6c4b1b10bd2d87 SHA-1: 2528da96f18d1557bc65258585d0923a5edb7665 SHA-256: e38a48dc4fed319bd70761dbf80a6446ea76ea89866a8f9d2fc6e0b6d0d1e8f7
92 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are hosted on newly registered domains and appear to be part of an SEO link farm. The document body, though heavily obfuscated, contains text related to hurricane season and the wkhtmltopdf tool, suggesting a lure to disguise the malicious intent. The primary goal appears to be driving traffic to these external sites, potentially for phishing or ad fraud.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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://nataliyatodorportfolio.com/uploads/1/3/1/4/131453041/131453041.html#temporada+de+huracanes+en+el+caribe+mexicano+2019
    • http://sambookings.com/uploads/1/3/0/3/130323417/dalofasitibisakowe.pdf
    • http://theblindcartographer.com/uploads/1/3/0/6/130622080/8009300.pdf
    • http://hilarysnideryoga.com/uploads/1/3/1/0/131069940/dazaxeg_litubukojurone_mijebuvip.pdf
    • http://batistabakery.com/uploads/1/3/1/4/131484268/982ee401a9f.pdf
    • http://baronwheelweights.com/uploads/1/3/0/4/130490078/d129ba6e12dd07.pdf
    • http://winnergeneration.com/uploads/1/3/0/9/130969858/53317dfed3.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_off00005ef1.bin
9658116a1f59237f7453aa466bdd86eef09b35a0ef49e227a6489900d03bd255		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EF1 9124 bytes

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