Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdd15d95c297fd8b…

MALICIOUS

PDF

40.0 KB Created: 2020-11-08 07:50:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: a6d57ef44a6948253696b114ab3a6a4e SHA-1: 1a4ca04a4df152b6482992a8076c372e71484652 SHA-256: bdd15d95c297fd8b3403d20abaa31a1bba32346e22a57f54da566b6bd5a7d7a0
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 https://trafftec.ru/aws?keyword=clay+county+nc+register+of+deeds+office PDF link annotation
    • https://widubemevojapo.weebly.com/uploads/1/3/4/3/134320166/xalexabotowukag.pdfIn PDF document text
    • https://gegiritofizupog.weebly.com/uploads/1/3/4/6/134644009/lufaxoradamitonigopu.pdfIn PDF document text
    • https://bupifepubeweta.weebly.com/uploads/1/3/4/3/134336259/mitubisoma.pdfIn PDF document text
    • https://temazojirilezin.weebly.com/uploads/1/3/2/3/132302863/kajepalukupe_fekesukozubi_nalifuwunetov_wejunowojuro.pdfIn PDF document text
    • https://fineruliji.weebly.com/uploads/1/3/4/3/134313455/d601c63.pdfIn PDF document text
    • https://jibisovewa.weebly.com/uploads/1/3/4/6/134653871/dcd29be4506.pdfIn PDF document text
    • https://vefozifus.weebly.com/uploads/1/3/4/3/134382693/videbutipopuzubari.pdfIn PDF document text
    • https://nanorobudilason.weebly.com/uploads/1/3/0/7/130775181/jabedu.pdfIn PDF document text
    • https://pefikasulanak.weebly.com/uploads/1/3/4/3/134350375/zodifox-linonag-safaj.pdfIn PDF document text
    • https://givurili.weebly.com/uploads/1/3/4/6/134605008/kabusodorovuza_vomisix_fasupiwepigus.pdfIn PDF document text
    • https://desemezek.weebly.com/uploads/1/3/4/4/134458593/2572676.pdfIn PDF document text
    • https://ludolukek.weebly.com/uploads/1/3/4/6/134699908/b36b301d57f6d8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfebdb12-b66d-4cbb-8994-f5b848ac891d/5317008915.pdfIn PDF document text
    • https://zitoduf.files.wordpress.com/2020/11/ximobijoxifofesava.pdfIn PDF document text
    • https://tesuserowin.files.wordpress.com/2020/11/assam_tet_free_guide_book.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E55 5196 bytes
SHA-256: b7a9b2de254d0675a1116c983a6cb9e72a4d9c9248120313f958dfb797c02046
font_01_sfnt_off00007016.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7016 10288 bytes
SHA-256: bf50f4f19ef84b677ff3e021f5b5239d07b2ce26e5383f887f09405923065884