Malicious PDF — malware analysis report

Static analysis result for SHA-256 0037366abde276ed…

MALICIOUS

PDF

41.4 KB Created: 2020-11-08 11:22:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: e1bc53db09918cd1b1a50ebeeb8d6886 SHA-1: c4c472492846fd87ed282ef105f203d14db19fc8 SHA-256: 0037366abde276ed3c6330db1bccab25e48b809eee94c460411fa03d0b3565bf
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://trafffi.ru/aws?keyword=the+ace+family+basketball+charity+event+2019 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370059/normal_5f8915f60b598.pdfIn PDF document text
    • https://numomepezudoti.weebly.com/uploads/1/3/4/3/134320197/4973718.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370055/normal_5fa66a0db1d46.pdfIn PDF document text
    • https://zoxetojasag.weebly.com/uploads/1/3/1/4/131437223/8fc8a33.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://s3.amazonaws.com/tetazino/99976936590.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/barcelo_bavaro_palace_map.pdfIn PDF document text
    • https://fabazobag.files.wordpress.com/2020/11/ruzugidem.pdfIn PDF document text
    • https://zikatudaxad.files.wordpress.com/2020/11/90607232484.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27ee2eb9-d63b-4e91-bddc-f0dd07f9fbea/purum.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/29056500630.pdfIn PDF document text
    • https://damafebu.files.wordpress.com/2020/11/need_for_speed_most_wanted_download_pc_torent.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_off000053c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53C0 5596 bytes
SHA-256: 9b69d6e7fafbbe44b7e082e3a9c290a9dc007efe6f6f1ec29d7b4cde6f8a5815
font_01_sfnt_off000066aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66AA 10592 bytes
SHA-256: 8d4a49fb42ba815c1a6d7c31fc5de04adfd522054f0f7a5d2d841abff7d78965
font_02_sfnt_off00008b06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B06 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378