Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb1387f31d41d6d1…

MALICIOUS

PDF

37.6 KB Created: 2020-06-04 03:57:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-08-25
MD5: 65849d06fba4ce4c48ebc1dd2d95a312 SHA-1: df63b13a3c42dbec1196fb69adf86744ddfb405f SHA-256: eb1387f31d41d6d1ec029c6103809524554e2430af0f2633cce033b2fe16f838
96 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The document body also contains embedded URLs, including 'http://mail.speakingpiecesboutique.com/uploads/1/3/0/2/130287960/130287960.html#libros+de+java'. This suggests the primary purpose is to redirect users to a network of linked content, potentially for SEO spam or to distribute further malicious payloads.

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://mail.speakingpiecesboutique.com/uploads/1/3/0/2/130287960/130287960.html#libros+de+java PDF link annotation
    • http://ahsan.dadgifts.us/uploads/1/3/1/3/131380273/vasof-dakosufusi.pdfIn PDF document text
    • http://mudlark.co.uk/uploads/1/3/0/3/130323765/mebololuzadovuk.pdfIn PDF document text
    • http://charlotteanneedwards.co.uk/uploads/1/3/0/7/130776564/nijozunemulilotasebe.pdfIn PDF document text
    • http://myluriyubodyscrubs.com/uploads/1/3/0/6/130621124/9291484.pdfIn PDF document text
    • http://greenmtngeezers.org/uploads/1/3/1/3/131379608/194642.pdfIn PDF document text
    • http://nuohotels.com/uploads/1/3/1/3/131383251/vixigoxe.pdfIn PDF document text
    • http://carlolewis.com/uploads/1/3/0/5/130589031/bibanubavewoko.pdfIn PDF document text
    • http://mandurahmustangs.com.au/uploads/1/3/1/8/131857284/d8d172b33a.pdfIn PDF document text
    • http://theharvey.net/uploads/1/3/0/6/130639766/gabebagup.pdfIn PDF document text
    • http://theartofphotography.ca/uploads/1/3/0/4/130483191/liponeb_miwunuk_bakapigixevoluw_ledadopedi.pdfIn PDF document text
    • http://jeremyscottismyagent.com/uploads/1/3/1/4/131437780/pupodabukozarovofe.pdfIn PDF document text
    • http://mail.speakingpiecesboutique.com/uploads/1/3/0/2/130287960/terms.htmlIn PDF document text
    • http://mail.speakingpiecesboutique.com/uploads/1/3/0/2/130287960/dmca.htmlIn PDF document text
    • http://mail.speakingpiecesboutique.com/uploads/1/3/0/2/130287960/policy.htmlIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://finaxowadiva.files.wordpress.com/2020/06/jabimotakogizujajamano.pdfIn PDF document text
    • https://pofulekat.files.wordpress.com/2020/06/livixujafolujabaxo.pdfIn PDF document text
    • https://dojujakukaj.files.wordpress.com/2020/06/14163341983.pdfIn PDF document text
    • https://wesobitid.files.wordpress.com/2020/06/40585865148.pdfIn PDF document text
    • https://rutogusufem.files.wordpress.com/2020/06/zavadinukorat.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

Related samples 1

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_off00006522.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6522 11180 bytes
SHA-256: 5251a44d69a57ccbb07e69eb3f022047ae15231167e4aacb1f709090f91766f2

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