Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dd8ff67685e95f5…

MALICIOUS

PDF

38.5 KB Created: 2020-05-19 01:57:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-04
MD5: 5ce48d0e83055d1910c2420424e4d72b SHA-1: d4a195d71c4720e80693954edf3d0e83ebb8447e SHA-256: 7dd8ff67685e95f52897799d331572d276fcdd3979f582985a2b07a6490efd96
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1190 Exploit Public-Facing Application

The PDF contains a large number of external links to other PDF files hosted on various domains, as indicated by the 'PDF_SEO_LINK_FARM' heuristic. The document body also contains one of these URLs, suggesting a deliberate attempt to direct users to external content. The ML classifier also flagged this PDF as malicious with high confidence. The primary attack pattern appears to be the distribution of malicious content or SEO manipulation through a link farm.

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://proverbs31inspired.com/uploads/1/3/0/5/130538902/130538902.html#media%252Fsociety+industries+images+and+audiences+free+pdf PDF link annotation
    • http://jmjremodeling.com/uploads/1/3/1/6/131636965/mepokuxutozixug.pdfIn PDF document text
    • http://phoenixtowtruckcompany.com/uploads/1/3/0/6/130640142/zirimatexapulezog.pdfIn PDF document text
    • http://lunaleephoto.com/uploads/1/3/0/4/130489800/wikumonexepa.pdfIn PDF document text
    • http://jlsconsulting.eu/uploads/1/3/0/7/130775537/jixewezuru.pdfIn PDF document text
    • http://livingmydogsbestlife.com/uploads/1/3/1/8/131856669/e2d64.pdfIn PDF document text
    • http://mathlandinc.com/uploads/1/3/0/5/130543976/tetamiturifimus.pdfIn PDF document text
    • http://discovervirtualagencyllc.org/uploads/1/3/1/4/131437099/3577dee.pdfIn PDF document text
    • http://phoenixmp.org/uploads/1/3/1/4/131452944/padekosonikow.pdfIn PDF document text
    • http://coloradodachtoberfest.com/uploads/1/3/0/5/130545954/6992691.pdfIn PDF document text
    • http://danaligt.com/uploads/1/3/0/3/130313153/megelas.pdfIn PDF document text
    • http://theminiaturepainter.com/uploads/1/3/0/9/130969931/5442615.pdfIn PDF document text
    • http://eagletowerfund.com/uploads/1/3/1/4/131453847/7901884.pdfIn PDF document text
    • http://blackhoneydew.com/uploads/1/3/0/9/130969499/5503225.pdfIn PDF document text
    • http://nord-intech.com/uploads/1/3/0/5/130590678/morovazuzagulo.pdfIn PDF document text
    • http://momentumlifecoach.org/uploads/1/3/0/7/130739945/ladin.pdfIn PDF document text
    • http://liveplex.live/uploads/1/3/1/0/131069762/77db717db4.pdfIn PDF document text
    • http://potnuts.me/uploads/1/3/0/8/130814329/f7e9759eb.pdfIn PDF document text
    • http://mckinneyroofingservice.com/uploads/1/3/0/5/130540077/6909979.pdfIn PDF document text
    • http://elvissafeandsound.com/uploads/1/3/1/4/131437607/kiverizidevuvef.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 5

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_off00006bf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF8 10024 bytes
SHA-256: 770e560b917e39856dc6912aba1c2800c84167494d4ff09cfc31dce8a5c6ca96

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