Malicious PDF — malware analysis report

Static analysis result for SHA-256 c474e2f6d5a711dc…

MALICIOUS

PDF

71.2 KB Created: 2021-02-17 23:46:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9962372984d77aa30f4d658669103ca4 SHA-1: 23c865fcfb9e0651faf08d6fd3db38ff60eae2b8 SHA-256: c474e2f6d5a711dcd168dc04d0a8b99760d85fd70925f933da0168c4251a547d
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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 https://jottigo.ru/wix?keyword=cdc+properties+lakeland+florida PDF link annotation
    • https://xaporavuxeboj.weebly.com/uploads/1/3/2/6/132695407/levusarelivu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376380/normal_5ffbb8cad66dc.pdfIn PDF document text
    • http://jiletos.22web.org/10944467342.pdfIn PDF document text
    • https://finijigif.weebly.com/uploads/1/3/2/6/132681422/5624736.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365628/normal_5ffb101c5774c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376606/normal_5fec276751d61.pdfIn PDF document text
    • https://zijobukevas.weebly.com/uploads/1/3/1/4/131454580/bubotexaleponun.pdfIn PDF document text
    • http://wavarev.22web.org/37750820296.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417992/normal_6027075256bff.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379485/normal_5fde2f4ea0f3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451229/normal_601aac82e3cd4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464702/normal_5fdb56980b827.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480387/normal_5ff0c5e41d068.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jifedefujodu/50984932282.pdfIn PDF document text
    • http://mojofukiw.epizy.com/column_chart_google_spreadsheet.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/wosasosesise.pdfIn PDF document text
    • https://s3.amazonaws.com/rufonali/mtb_manual_bunny_hop.pdfIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/49278909980.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA2C 5120 bytes
SHA-256: d004ed45c501193d9e0c68969a61e53ca509dfe110735f5661c7a5069b7a3ebf
font_01_sfnt_off0000eba4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBA4 10488 bytes
SHA-256: b6e47439f17a36039a44e50677db0d82957df3281b0c2bcd8008cab2bd766ae4