Malicious PDF — malware analysis report

Static analysis result for SHA-256 84204e2a6701d610…

MALICIOUS

PDF

50.8 KB Created: 2020-10-14 17:21:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 18a86e55f4e3756bf198f563cdf52e7e SHA-1: 223e1d5c795ae897d43f79d5ceb3cabb470b2013 SHA-256: 84204e2a6701d610d08368bb21eb394b1a8311c73ef85878c743e08f49a2bde8
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/pify?keyword=chronic+lymphocytic+leukemia+guidelines+2020 In PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/3409757.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/sefaritonos-nukivafeka-retisebop-regaxumex.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/18ad995.pdfIn PDF document text
    • https://site-1037196.mozfiles.com/files/1037196/93240538816.pdfIn PDF document text
    • https://site-1043880.mozfiles.com/files/1043880/68769367040.pdfIn PDF document text
    • https://site-1041286.mozfiles.com/files/1041286/24629548992.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/9232432.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/bosilo_ginasesif.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/837046.pdfIn PDF document text
    • https://site-1042545.mozfiles.com/files/1042545/xulob.pdfIn PDF document text
    • https://site-1038733.mozfiles.com/files/1038733/vadoledidokugaxazokoze.pdfIn PDF document text
    • https://site-1036826.mozfiles.com/files/1036826/65246826615.pdfIn PDF document text
    • https://site-1041084.mozfiles.com/files/1041084/42034412611.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/ba1b680b-a425-4792-a50e-0a29273f6097/pomupokevatenovileju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c41aa53-b1f4-400b-bc6e-2ba7e1eac9d3/wulosanipuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/083541ff-ce08-4565-8eb3-baf4c9d9e8a9/13854032618.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/035418fe-b8bf-4724-aaf0-ff3ffac078c9/35235073979.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01509207-83b2-4b87-b1cc-3d3208ae6e4a/58459852556.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4b2bf30-f84a-436f-bb0a-fc36e26b05bb/9830679497.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86162b9d-0e4a-4484-9730-70424de71647/35668789808.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007902.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7902 5832 bytes
SHA-256: 5932f0e13d003ace1b797c640bbdafe30d0cb2df6bfade30d73199a26ad7cdb7
font_01_sfnt_off00008cb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CB3 10224 bytes
SHA-256: 6ddc02103aeb220ac35b6b1980e7b028d1671939f9e505d7ca65659c74063b10
font_02_sfnt_off0000af9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF9F 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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