Malicious PDF — malware analysis report

Static analysis result for SHA-256 6292b2b0aaf2038c…

MALICIOUS

PDF

54.5 KB Created: 2020-10-16 10:14:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: b49f93e9e7ff69a5fd3771e892ba47eb SHA-1: 6a01330f9c20fe27d1012b36230f99c04a4e5653 SHA-256: 6292b2b0aaf2038c3fa5b9a762abeada0779852cc2b364785f0a18a2ef3230d3
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://gettraff.ru/123?keyword=canadian+diabetes+food+guide+chart In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368501/normal_5f87f14dc6a66.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366956/normal_5f883e0105ce0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365656/normal_5f87a62365bf8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368999/normal_5f8937b68b293.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367279/normal_5f889da678323.pdfIn PDF document text
    • https://lixaworone.weebly.com/uploads/1/3/1/8/131871871/gorixob-wutumikomagi-wadofisid.pdfIn PDF document text
    • https://zevigetadafuwun.weebly.com/uploads/1/3/0/9/130969942/zitatedusude.pdfIn PDF document text
    • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/jixoxararena.pdfIn PDF document text
    • https://fanavepuru.weebly.com/uploads/1/3/1/8/131871984/9478269.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/7971455.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/297c0.pdfIn PDF document text
    • https://fimozafovobas.weebly.com/uploads/1/3/2/7/132741130/5653998.pdfIn PDF document text
    • https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/zakenu_wovanozezavibit.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/8554420.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366306/normal_5f8939fa6cd5d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367914/normal_5f88bd79aa329.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366367/normal_5f876ddcb9db7.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/e8cb5a21-92e9-482b-addf-eb2e8df2501e/xulezu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13f79ef5-01f3-47ad-a203-bf2d86102f6a/9955840570.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e598c94-725a-4e89-a33e-65d775a77d92/dejib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d78c8e4-b3c8-4503-8e71-8e935c46cbbd/mowurutufube.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29ec8dd6-094a-4c29-bc7e-6c9a856fdbf4/sunalanufarejepelixogali.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_off0000886c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x886C 5296 bytes
SHA-256: 4d711479e3d7e98960aafec319f3543a42e109630508ba227b3a5c0b1e20d017
font_01_sfnt_off00009a67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A67 10380 bytes
SHA-256: 5d709c899f5df2e01d38f7fbaa5bb2ae3c0873aef60b182cc63f38e2e04b8e58
font_02_sfnt_off0000bdea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDEA 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361