Malicious PDF — malware analysis report

Static analysis result for SHA-256 35922ca5bb3bbaa0…

MALICIOUS

PDF

43.8 KB Created: 2020-11-07 10:55:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 518d19a167ec3b2b6c7647378fb55449 SHA-1: 6c5063afa5d819619a676bbdc9d552d375e0643b SHA-256: 35922ca5bb3bbaa0ff34945f96c2e0685ce923eb3bade9431ff9e575c0ae0b37
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://traffine.ru/123?keyword=gold+soundz+chords In PDF document text
    • https://tadurefejixuset.weebly.com/uploads/1/3/4/4/134498676/7935214.pdfIn PDF document text
    • https://nefalitarula.weebly.com/uploads/1/3/4/3/134308949/nuwunafepunezi-zogefusepatuvub-lizazoj-koravis.pdfIn PDF document text
    • https://ritixalasan.weebly.com/uploads/1/3/4/2/134265532/forupitade.pdfIn PDF document text
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/bavaso.pdfIn PDF document text
    • https://gejewesogoj.weebly.com/uploads/1/3/4/6/134612034/2557293.pdfIn PDF document text
    • https://dirigesibujov.weebly.com/uploads/1/3/0/9/130969991/09451e2e6dd7.pdfIn PDF document text
    • https://xabopefasuliwik.weebly.com/uploads/1/3/4/4/134445681/8095642.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/pazifetanegapu/ximoradirorufabupusufo.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/branding_strategies_in_marketing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c10f4d1-2744-4337-b672-48653bcebbd0/30918061464.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/sakugokekaramizafa.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_off00006bb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BB2 4896 bytes
SHA-256: a59ba9f7c4f7bf1fb75e18b1a599f335b0fe0f979184d1dbfc774fc6ff796613
font_01_sfnt_off00007c5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C5F 11736 bytes
SHA-256: 098927296b3df2a2b2eea100716a225958e57c258edb746ab9fed4845b3f6bf6