Malicious PDF — malware analysis report

Static analysis result for SHA-256 142cdce65c7c4ad7…

MALICIOUS

PDF

36.5 KB Created: 2020-03-06 16:21:58 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 755118ef0688202da052ae465d36ce7a SHA-1: d807014d3266786209aacf3939b30f5eb91bbf4c SHA-256: 142cdce65c7c4ad7480804a200ee7ba96c0fc7659493087db997c8cda7a6353e
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting an attempt to manipulate search engine results or distribute malicious content. No scripts were extracted, but the sheer volume of external links indicates a high likelihood of malicious intent, possibly to download further payloads or redirect users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://host119.carmichaelnl.com/uploads/1/3/0/6/130621426/130621426.html#afl+fixtures+pdf+2019
    • http://davidjohnhamm.com/uploads/1/3/0/4/130477584/sanejagesunadelo.pdf
    • http://realmentespanola.com/uploads/1/3/0/8/130814421/3356664c8.pdf
    • http://mx.spanishflamencodance.com/uploads/1/3/0/6/130620910/bimufelajovu-bilesaliz-xegusojiwov-wilunubo.pdf
    • http://www.online2hero.com/uploads/1/3/0/7/130776106/bebevanir-jutazipepekuwum-malepam.pdf
    • http://offthepier.net/uploads/1/3/0/5/130551401/9942300.pdf
    • http://www.manymuddyfeet.com/uploads/1/3/0/7/130739098/ec8fe493ccd2a.pdf
    • http://palomarodrigues.com/uploads/1/3/0/7/130739167/6575058.pdf
    • http://afterthefallinc.com/uploads/1/3/0/2/130289668/fefegeliwiw-fadevupa.pdf
    • http://thatclassiccarshow.com/uploads/1/3/0/6/130604475/a66700e4910be.pdf
    • http://jaminspiraedu.com/uploads/1/3/0/6/130605312/dimagiki.pdf
    • http://bfallard.com/uploads/1/3/0/7/130740363/tuwepijeman_bufubojas.pdf
    • http://sydneyplumbingplumbers.com.au/uploads/1/3/0/4/130435821/tewafexidupebi-bizupulubevopav-jeveg-rexerewisesis.pdf
    • http://banyantreeconsulting.co.uk/uploads/1/3/0/7/130738921/boruwaxigolarokisuza.pdf
    • http://cinkonsoloslugu.org/uploads/1/3/0/5/130539202/5ce1598c62376e3.pdf
    • http://icandee.org/uploads/1/3/0/7/130739491/givubulazoxelal-wogefofupido-gesevexumuv-dupad.pdf
    • http://www.reslermusicstudio.com/uploads/1/3/0/2/130291438/4cf0c.pdf
    • http://soycesarbueno.com/uploads/1/3/0/6/130604201/89247.pdf
    • http://joewuphoto.com/uploads/1/3/0/6/130620391/ff0774e.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_off000067fd.bin
2aea45ab2574e02d3009f41de0ac410117864b4a6f2a31c45c8489a96771e168
pdf-font-stream PDF embedded font (sfnt) at offset 0x67FD 7312 bytes