Malicious PDF — malware analysis report

Static analysis result for SHA-256 49f0092eae76b1e2…

MALICIOUS

PDF

66.7 KB Created: 2020-10-05 09:36:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 520b98b9cd61373a775c1de7e3024857 SHA-1: 9be13cd3b2f7d99efe34209ecc5350c3a9ca1fc2 SHA-256: 49f0092eae76b1e29791b673ca01eb2f1c0adc632dd5b3d99833ad9b716926af
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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://gettraff.ru/strik?keyword=woodcock+johnson+test+pdf In PDF document text
    • http://files.dsempoweredlife.com/uploads/1/3/1/4/131437937/4628307.pdfIn PDF document text
    • http://mimor.fifecarerscentre.org/uploads/1/3/1/3/131379874/lezezane.pdfIn PDF document text
    • http://tujol.doyouhaveitinblack.com/uploads/1/3/2/3/132303388/pujamov.pdfIn PDF document text
    • http://vupen.beamwellness.org/uploads/1/3/0/9/130969813/vulosali.pdfIn PDF document text
    • https://site-1038517.mozfiles.com/files/1038517/92292380493.pdfIn PDF document text
    • https://site-1036798.mozfiles.com/files/1036798/duxekunig.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/99579dfe-979b-4ec5-be51-f91af2b48bb0/domuvojeku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9458/9094/files/its_everyday_bro_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7745/9363/files/dexibewugegegut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1857/5262/files/evaluating_trig_expressions_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8762/5369/files/12222388895.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0458/3211/0243/files/64862132673.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_off0000c91d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC91D 5060 bytes
SHA-256: c4f8fb671ee1fb47ea126c504ae58624403d20164021e5e7d1c3fbe236530a43
font_01_sfnt_off0000da73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA73 10416 bytes
SHA-256: ec3840afa3d7be94db1e6b7d1a23dddbe602a5077dd93bdef0e1067f75085d72