Malicious PDF — malware analysis report

Static analysis result for SHA-256 6760f577b6584369…

MALICIOUS

PDF

39.3 KB Created: 2020-10-08 15:40:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 89329b64a80718f6f0f500872effef66 SHA-1: f2f55ff56c350b350c941394c958b894180af865 SHA-256: 6760f577b6584369bd1ab82acce0319491dc1255f25e4cfab677d717eb209262
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ggtraff.ru/strik?keyword=troll+hunter+coloring+pages In PDF document text
    • http://novaxi.chambersofpoe.com/uploads/1/3/1/4/131438729/runipabefomudi_rivaranasig.pdfIn PDF document text
    • http://files.ktantiques.net/uploads/1/3/0/7/130775021/gapizuxaperufiz.pdfIn PDF document text
    • http://files.linemunhoz.com/uploads/1/3/2/6/132681951/bd9e5f3090afff.pdfIn PDF document text
    • http://debaki.freedomseminars.net/uploads/1/3/1/8/131871462/najusoloja.pdfIn PDF document text
    • http://files.jowaelbers.com/uploads/1/3/2/7/132710589/vukilikadagu_sanavobolatux.pdfIn PDF document text
    • https://site-1041600.mozfiles.com/files/1041600/remidanuxowesoxumexu.pdfIn PDF document text
    • https://site-1037141.mozfiles.com/files/1037141/59802046757.pdfIn PDF document text
    • https://site-1037102.mozfiles.com/files/1037102/zoxulixedabig.pdfIn PDF document text
    • https://site-1037282.mozfiles.com/files/1037282/xonenonogurenonamarosaviw.pdfIn PDF document text
    • https://site-1038492.mozfiles.com/files/1038492/sixazajikifaxulemuxojo.pdfIn PDF document text
    • http://files.mickmacve.com/uploads/1/3/2/8/132814146/munigozemix-nitirekevi.pdfIn PDF document text
    • http://ritese.awordtothewiseandcommonsense.net/uploads/1/3/1/4/131437699/papowilukaj_zatak_bikizujodav_sabilirusenoraw.pdfIn PDF document text
    • http://magul.redbird-designs.net/uploads/1/3/1/4/131453902/jivizugopajef.pdfIn PDF document text
    • https://site-1040663.mozfiles.com/files/1040663/46471514039.pdfIn PDF document text
    • https://site-1036646.mozfiles.com/files/1036646/84506506949.pdfIn PDF document text
    • https://site-1038602.mozfiles.com/files/1038602/48621902899.pdfIn PDF document text
    • https://site-1039355.mozfiles.com/files/1039355/60632578319.pdfIn PDF document text
    • https://site-1036722.mozfiles.com/files/1036722/nanasale.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00005d75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D75 5144 bytes
SHA-256: 4e0824d96be4fbafe79b298d830280e36a6a323580e6f73bd397e5c412de3cc4
font_01_sfnt_off00006eed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EED 9828 bytes
SHA-256: c75046c969f1ea3e2ff325857d74a9e71457037366a2cd997d2ec7c38d134f36

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