Malicious PDF — malware analysis report

Static analysis result for SHA-256 35c297c8839827ed…

MALICIOUS

PDF

73.6 KB Created: 2021-02-06 01:43:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 52d36de59a5ddf8a1da234d068c80c1b SHA-1: 8bd9659fe19e7471b321d8bea254c149c946bb39 SHA-256: 35c297c8839827ede8e984657cc4c867a4aa50fa91fc6a1bff14ee10d66a8a7e
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/wb?keyword=galilee%20song%20sheet%20music PDF link annotation
    • http://www19216801.site/16383324615e7k9u.pdfIn PDF document text
    • https://cdn.sqhk.co/zidezofa/gddigid/international_journal_of_cosmology_astronomy_and_astrophysics.pdfIn PDF document text
    • https://letogapebo.weebly.com/uploads/1/3/5/3/135320268/9050980.pdfIn PDF document text
    • https://cdn.sqhk.co/zegofurop/dDhjhfm/pianistas_mas_famosos_actuales.pdfIn PDF document text
    • http://ourfutures.space/la_gaviota_y_el_gato_que_le_enseo_aqgl9a.pdfIn PDF document text
    • https://mabamigetope.weebly.com/uploads/1/3/4/4/134493328/1873699.pdfIn PDF document text
    • https://nutapezuzuf.weebly.com/uploads/1/3/0/9/130969421/f06eb25c.pdfIn PDF document text
    • https://cdn.sqhk.co/ruzaxube/chjihj9/56598508295.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368487/normal_5fe81ab9a48ab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495838/normal_5fcfec89175df.pdfIn PDF document text
    • http://voiprormul.xyz/mibejolegunt73jm.pdfIn PDF document text
    • https://sazoxizifa.weebly.com/uploads/1/3/4/5/134505384/5209403.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392237/normal_60160088c77fe.pdfIn PDF document text
    • https://cdn.sqhk.co/jedugifaxido/gYgh7aK/38379458452.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kimone/10657735103.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_off0000e291.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE291 5148 bytes
SHA-256: 0e068a8c1e2d4b82faaa67ff8fbe8a8e71425a60c8c3d701becd5cbc6c47f374
font_01_sfnt_off0000f3f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F3 11304 bytes
SHA-256: 627b7847f429826a7f347f9d58d8692032e6816ec6eb05f1a112f34b4b447af6