Malicious PDF — malware analysis report

Static analysis result for SHA-256 47aefa43425f3c07…

MALICIOUS

PDF

36.0 KB Created: 2020-06-04 04:12:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 723219123cb4087bc7d48b25e01ecaf2 SHA-1: c0252b1c159d3b9c4e42ff13e676e69bf046dd41 SHA-256: 47aefa43425f3c071e980ac25867ae6664a3371dcf86c940437cf265bd36b901
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, a technique often used for SEO spam or to direct users to malicious content. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass external PDF link farm, with the dominant host being 'peachywellness.com'. The document body text mentions 'Settlers of catan optimal strategy', likely a lure to attract clicks. No scripts were extracted from this sample.

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://lunalolasc.com/uploads/1/3/0/9/130969563/130969563.html#settlers+of+catan+optimal+strategy PDF link annotation
    • http://peachywellness.com/uploads/1/3/0/5/130546385/1204883.pdfIn PDF document text
    • http://hostmaster.ladpp.org.uk/uploads/1/3/1/4/131453512/c357c.pdfIn PDF document text
    • http://thissideoftherainbow.net/uploads/1/3/1/3/131398258/rewuninafi.pdfIn PDF document text
    • http://sv-liebstadt.de/uploads/1/3/0/6/130639593/fumerufuto.pdfIn PDF document text
    • http://sarpropmain.services/uploads/1/3/0/3/130323409/zavixosesudidab.pdfIn PDF document text
    • http://lunalolasc.com/uploads/1/3/0/9/130969563/terms.htmlIn PDF document text
    • http://lunalolasc.com/uploads/1/3/0/9/130969563/dmca.htmlIn PDF document text
    • http://lunalolasc.com/uploads/1/3/0/9/130969563/policy.htmlIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://renubuw.files.wordpress.com/2020/06/95902253402.pdfIn PDF document text
    • https://bemawebu.files.wordpress.com/2020/06/8942918164.pdfIn PDF document text
    • https://didototufuto.files.wordpress.com/2020/06/89804205841.pdfIn PDF document text
    • https://ribajurave604526662.files.wordpress.com/2020/06/jusinotavirowuserapekasux.pdfIn PDF document text
    • https://tavatolu.files.wordpress.com/2020/06/liwaduru.pdfIn PDF document text
    • https://zozumak.files.wordpress.com/2020/06/61741949392.pdfIn PDF document text
    • https://pakavekum.files.wordpress.com/2020/06/77041167375.pdfIn PDF document text
    • https://wesafizoda.files.wordpress.com/2020/06/wexodijepagurofub.pdfIn PDF document text
    • https://buxanoxunos.files.wordpress.com/2020/06/44223061818.pdfIn PDF document text
    • https://warifiri.files.wordpress.com/2020/06/widujofelixobejoto.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_off000062a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A0 10008 bytes
SHA-256: bc7867017b0da42839be84bbabb10a9880d83c20eb5a6b09cf1f4edc8802ec27

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