Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b0134d6e7788a2c…

MALICIOUS

PDF

70.7 KB Created: 2021-03-03 02:31:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 96ab22bb78ce3573d7a62e942aafcbcf SHA-1: 8e9c0ae42304ddc8718c6d4864be3570eea3d45b SHA-256: 8b0134d6e7788a2cbc5166e3d82163aaefd2eacb986982d1bbaf95a5a9b9b61e
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://baarspo.ru/award?keyword=how+to+treat+scoliosis+naturally PDF link annotation
    • http://tikopariwoxa.mygamesonline.org/logitech_m557_bluetooth_mouse_not_connecting.pdfIn PDF document text
    • https://vawudida.weebly.com/uploads/1/3/4/8/134890241/buwesubumizowew.pdfIn PDF document text
    • https://wuvotawek.weebly.com/uploads/1/3/4/8/134872633/05cea378cb.pdfIn PDF document text
    • https://zikegebuner.weebly.com/uploads/1/3/4/8/134856814/kebowa_vixiware_zebebuba.pdfIn PDF document text
    • http://pakisonuzaruwav.iblogger.org/anarkali_malayalam_full_movie_free_cinemavilla.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457305/normal_5fdb6f44b3df3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385410/normal_600c3c601ea2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406516/normal_602b603d4bb79.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474977/normal_600ce81465177.pdfIn PDF document text
    • https://wusikizojig.weebly.com/uploads/1/3/4/8/134883510/vodubut.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403131/normal_5ff2afcc54a6f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fuxivupinamipi.rf.gd/gagowifetaput.pdfIn PDF document text
    • http://pebabub.rf.gd/developed_and_developing_countries_worksheet.pdfIn PDF document text
    • http://zeluwaboder.rf.gd/44601230673.pdfIn PDF document text
    • http://pususarejopo.epizy.com/61155398458.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_off0000db51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB51 4948 bytes
SHA-256: da0c1f368d768489a322c32ebc6d66e34609ebf39ac550031670779c2e6db979
font_01_sfnt_off0000ec47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC47 9968 bytes
SHA-256: b0d1db723642062db6cb9d6fd76d5a295344c0b576c246c53ab6d8a040e52e8d