Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5340dcda33bb0ae…

MALICIOUS

PDF

51.9 KB Created: 2020-05-19 22:12:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 7bf5026810a1960ae3daf8f7ebccc046 SHA-1: e6653ffc27a4d14537961e84ede9ba8aa56050af SHA-256: f5340dcda33bb0ae9aa91c114539ccaabcc8ab556a49753e31ff271ca6336711
96 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious Link

The PDF document contains a large number of external links to other PDF files hosted on various domains. This behavior is indicative of a link farm or SEO manipulation tactic, potentially used to distribute malicious content or improve search engine rankings for harmful sites. The primary attack pattern involves directing users to these external resources, leveraging the PDF_SEO_LINK_FARM heuristic. No scripts were extracted from this sample, limiting the ability to determine further payload delivery or execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://unitedcivilk.org/uploads/1/3/0/6/130639227/130639227.html#talianske+fr%25C3%25A1zy+Vesel%25C3%25A9+Vianoce PDF link annotation
    • http://futurereadymb.ca/uploads/1/3/1/4/131453944/736028.pdfIn PDF document text
    • http://wineguyla.com/uploads/1/3/0/5/130551006/jebugopewe.pdfIn PDF document text
    • http://vnapoles2.com/uploads/1/3/0/6/130620420/5845581.pdfIn PDF document text
    • http://dennysdrywallllc.com/uploads/1/3/1/4/131406855/ludasegidoji.pdfIn PDF document text
    • http://aestheticsofleadership.com/uploads/1/3/0/7/130775817/toxuk.pdfIn PDF document text
    • http://stephanielacapra.com/uploads/1/3/1/6/131606025/2581758.pdfIn PDF document text
    • http://tymetcalfephotography.com/uploads/1/3/1/8/131856207/ac0e8ee8.pdfIn PDF document text
    • http://gris-grisgraphix.com/uploads/1/3/1/4/131407493/nifovo.pdfIn PDF document text
    • http://geminiwoodworksllc.com/uploads/1/3/1/0/131070591/57180ee2f616853.pdfIn PDF document text
    • http://girlshackla.org/uploads/1/3/1/6/131607363/168171.pdfIn PDF document text
    • http://worldjamz.net/uploads/1/3/0/2/130291575/bijisomaxopurugano.pdfIn PDF document text
    • http://megannicolephoto.com/uploads/1/3/1/6/131607208/319917.pdfIn PDF document text
    • http://singoair.com/uploads/1/3/1/6/131606473/1038389.pdfIn PDF document text
    • http://ericaleejumps.com/uploads/1/3/0/7/130776042/jipuloxexaba.pdfIn PDF document text
    • http://micah68project.org/uploads/1/3/0/6/130639876/5028122.pdfIn PDF document text
    • http://passivhaus-probewohnen.de/uploads/1/3/0/4/130476738/dagekulavogegex.pdfIn PDF document text
    • http://spartanfireservices.com/uploads/1/3/1/3/131384335/sipul_sakigasitax.pdfIn PDF document text
    • http://elisadesign10.com/uploads/1/3/1/4/131454986/4ebc48f5f1238f.pdfIn PDF document text
    • http://lisamajellahawkins.com/uploads/1/3/0/5/130589346/mupidorumiru.pdfIn PDF document text
    • http://losangelesmural.net/uploads/1/3/1/8/131856039/buped.pdfIn PDF document text
    • http://flipteach.info/uploads/1/3/1/1/131164452/9441363.pdfIn PDF document text
    • http://cbdoshkoshwisconsinhealth.com/uploads/1/3/0/2/130272470/5076171.pdfIn PDF document text
    • http://sparkleysoph.com/uploads/1/3/1/4/131407635/pakutid-gumux-siposazi.pdfIn PDF document text
    • http://sunhightsllc.com/uploads/1/3/1/6/131636806/bonesifaviroxu.pdfIn PDF document text
    • http://michalrutkowski.net/uploads/1/3/1/4/131438461/1761769.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 2

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_off00009986.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9986 13576 bytes
SHA-256: 82a44bd50de2abca02d3b744418e72177cf34cc1a8bda31e8c07cb0fe62ccac4

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