Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e18e3f456b43d9f…

MALICIOUS

PDF

47.7 KB Created: 2020-03-28 11:52:25 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 0ae3d90e5ed1fd5988f48793103bed18 SHA-1: da1df9440ab8ece72a22bdd0e06d1bc6bd74aeeb SHA-256: 5e18e3f456b43d9f1c1341665293edee7acb5fa2ede7a1f552ebf50b742ac67b
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a large number of external links, identified as a link farm, which is a common tactic for distributing malware or directing users to malicious websites. The ML classifier strongly indicated maliciousness, and the embedded URLs suggest a watering hole or phishing attempt. No scripts were extracted, but the PDF structure and numerous external links point towards a malicious intent to redirect the user.

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://mychinesewatch.com/uploads/1/3/0/3/130323208/130323208.html#plan+de+emergencia+y+evacuacion+ante+un+sismo PDF link annotation
    • http://mta-sts.mxe.mokadelic.com/uploads/1/3/0/7/130776750/sabowifurozepib-faporusosup-wibafulutuwux-xetebezituvevi.pdfIn PDF document text
    • http://sammyfit.net/uploads/1/3/0/7/130775635/babukexopivome.pdfIn PDF document text
    • http://clbusrepairservice.com/uploads/1/3/0/5/130539202/921f0ceddeb7ded.pdfIn PDF document text
    • http://nakedyogadallas.com/uploads/1/3/0/7/130776518/vepif.pdfIn PDF document text
    • http://aldodelgado.net/uploads/1/3/0/4/130476423/6564530.pdfIn PDF document text
    • http://bunjupconsultancy.com/uploads/1/3/1/1/131164431/ce582.pdfIn PDF document text
    • http://shoppingcentrebusiness.com/uploads/1/3/0/5/130588857/47ae260f51.pdfIn PDF document text
    • http://charlotteshope.net/uploads/1/3/0/8/130814100/mabigor.pdfIn PDF document text
    • http://igniteconcert.com/uploads/1/3/0/2/130273804/piwovelegusito.pdfIn PDF document text
    • http://phoenixconsulting.co/uploads/1/3/0/3/130323597/7728096.pdfIn PDF document text
    • http://routerbitsets.com/uploads/1/3/0/7/130738615/pexemevogam_nagaxuxodafamez_midebige_xoxowapilinagos.pdfIn PDF document text
    • http://middletonlandcompany.com/uploads/1/3/0/6/130604430/nuxuli_supaw_pejagogoneropop.pdfIn PDF document text
    • http://uatr.org/uploads/1/3/0/8/130874482/dipegeg_wakatenasu_nerotejesorotex_tuxupa.pdfIn PDF document text
    • http://jasonibarraart.com/uploads/1/3/0/8/130814189/2242527.pdfIn PDF document text
    • http://suekennedycelebrant.com/uploads/1/3/0/5/130588762/ririladitazojo.pdfIn PDF document text
    • http://markonhistory.com/uploads/1/3/1/1/131164234/9987568.pdfIn PDF document text
    • http://islamilainenhautaus.info/uploads/1/3/0/5/130590312/7906798.pdfIn PDF document text
    • http://civicballetofconnecticut.com/uploads/1/3/0/5/130551262/5632763.pdfIn PDF document text
    • http://1wordllc.net/uploads/1/3/0/6/130639690/af0d3deac.pdfIn PDF document text
    • http://apoorvarajesh.org/uploads/1/3/0/5/130551188/7186426.pdfIn PDF document text
    • http://dp8299.com/uploads/1/3/0/7/130776415/7854809.pdfIn PDF document text
    • http://chasefreedomunlimitedbonus.com/uploads/1/3/0/7/130776657/xatarerud-vefetopetered-fiwemifevepaj.pdfIn PDF document text
    • http://simpledesignsbyjennifer.com/uploads/1/3/0/3/130313339/78e7dd76340e.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

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_off0000907c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x907C 8992 bytes
SHA-256: 5ef42e08dd164e59712e89b93a42c9eda25caecd528db31c57591f79d7b5765e

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