Malicious PDF — malware analysis report

Static analysis result for SHA-256 4de032cd1a6f0639…

MALICIOUS

PDF

70.3 KB Created: 2021-02-20 00:48:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: d6adf231ad8fd9b5ce93eec1226d0345 SHA-1: 4c9d9b36dc3f5ebed250042434f2864f97e3f644 SHA-256: 4de032cd1a6f06395d1204656b8e4f156c012e32dbacdb40051132526b80530d
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/strik?utm_term=most+common+french+phrases+for+travelers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4427811/normal_601f1dcaba608.pdfIn PDF document text
    • https://kamukijupekud.weebly.com/uploads/1/3/3/9/133997827/1b36b0b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391340/normal_60164bb0f30da.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445879/normal_5fcf2f656bd78.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4527859/normal_600c0ac277cb2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416149/normal_6015ffb2dea17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393901/normal_600c1ab4de974.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421783/normal_5ff14ec3c91b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444869/normal_5fdc78c08be69.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zumewozuzetarun.epizy.com/rulawabikozifok.pdfIn PDF document text
    • http://fepoxojosatomu.epizy.com/kabowinapeb.pdfIn PDF document text
    • https://s3.amazonaws.com/jugobimuraje/tilepixodupuzoge.pdfIn PDF document text
    • http://xozodijavoxovun.epizy.com/do_animal_cells_have_vacuoles_yahoo_answers.pdfIn PDF document text
    • http://dojanipono.rf.gd/34528946034.pdfIn PDF document text
    • http://robefopatobut.epizy.com/17714022801.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_off0000d133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD133 5320 bytes
SHA-256: c3fe059582a8b65d303cf07cb571f2fe7c8955a2af5e6f58c709218c15a2c1c4
font_01_sfnt_off0000e336.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE336 12192 bytes
SHA-256: a582666f3e51d81552af6ec77e3e04926167507e2ce70d12dd6960d0d69827a4