Malicious PDF — malware analysis report

Static analysis result for SHA-256 218f6aac08403489…

MALICIOUS

PDF

31.4 KB Created: 2020-05-14 21:43:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-04
MD5: 5b206678a5602109ae18151a87173ed5 SHA-1: 1cd9bac5c3c6e4ad8a036d42ae85fc75b6432e3f SHA-256: 218f6aac0840348963eb994f587fa111abbf9ab71b8a650a9b26bfe981cbf964
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. The document body contains a reference to 'Dada badmash movie' and metadata indicating it was generated by wkhtmltopdf. The primary attack pattern involves directing users to numerous external URLs, likely for SEO spam or to host malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://saltydeepblue.com/uploads/1/3/1/4/131437677/131437677.html#dada+badmash+movie PDF link annotation
    • http://al-takfir-al-sihriu.net/uploads/1/3/0/8/130814976/af128e.pdfIn PDF document text
    • http://thenaturalorderstore.org/uploads/1/3/0/8/130814238/8063420.pdfIn PDF document text
    • http://dogwhistleintl.com/uploads/1/3/0/4/130476458/8472050.pdfIn PDF document text
    • http://hashtag-electricalservices.com/uploads/1/3/1/1/131163957/6e943d2.pdfIn PDF document text
    • http://kpcdesign.org/uploads/1/3/1/3/131398219/xuxetekatovu.pdfIn PDF document text
    • http://foreverfridayfoundation.com/uploads/1/3/0/6/130621892/524561.pdfIn PDF document text
    • http://parkyssaloon.com/uploads/1/3/1/4/131410952/3036557.pdfIn PDF document text
    • http://infernopolishes.com/uploads/1/3/0/5/130551219/bipagejisevok.pdfIn PDF document text
    • http://bowmanplumbingservice.com/uploads/1/3/0/2/130270859/konilat.pdfIn PDF document text
    • http://sixoneave.com/uploads/1/3/1/8/131856163/nidutifiki-jamepamigeseku.pdfIn PDF document text
    • http://sacjskitchener.com/uploads/1/3/1/6/131606133/totave.pdfIn PDF document text
    • http://platformgym.net/uploads/1/3/0/6/130639334/3173616.pdfIn PDF document text
    • http://damongardnersr.info/uploads/1/3/0/6/130639037/7090415.pdfIn PDF document text
    • http://zahradaremesel.eu/uploads/1/3/0/5/130589202/4106b1571c287.pdfIn PDF document text
    • http://americanpawoutlet.com/uploads/1/3/1/4/131454116/vavone_zadusapal_bixujug.pdfIn PDF document text
    • http://liveleadpray.net/uploads/1/3/1/6/131636744/6953e.pdfIn PDF document text
    • http://saultlittleleague.com/uploads/1/3/0/7/130775017/gozomula.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F84 10160 bytes
SHA-256: c62cf5c477de76a1203d5c44bedcb63e28ecb124aea0018da6102f05405d8cfe

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