Malicious PDF — malware analysis report

Static analysis result for SHA-256 d90af57cc83ce8a6…

MALICIOUS

PDF

44.2 KB Created: 2020-10-31 01:37:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 4119fe6d6a258e8c859b712329f477c5 SHA-1: 0ea6e26e2796e5d876a81fbd766c04a7ea0d3d1e SHA-256: d90af57cc83ce8a673860f15327fd8994a474d8e842a7fd9b1d7c5a6078e1187
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/aws?keyword=timber+frame+shed+kits In PDF document text
    • https://cdn-cms.f-static.net/uploads/4386330/normal_5f91f9255dd54.pdfIn PDF document text
    • https://bitoxusimafitaj.weebly.com/uploads/1/3/4/3/134311342/kixetozugabowuke.pdfIn PDF document text
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/webokataxo_tikuze_webogenoz_pisok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366382/normal_5f89bc5fd646f.pdfIn PDF document text
    • https://valetakomo.weebly.com/uploads/1/3/4/0/134012509/mosuneponufokek.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409122/normal_5f9a816114621.pdfIn PDF document text
    • https://galuxenezinex.weebly.com/uploads/1/3/4/4/134437763/jipaduvune.pdfIn PDF document text
    • https://dagigokes.weebly.com/uploads/1/3/0/7/130739756/8045519.pdfIn PDF document text
    • https://folukufisika.weebly.com/uploads/1/3/1/3/131384255/6bb06860.pdfIn PDF document text
    • https://gikoberi.weebly.com/uploads/1/3/0/9/130969260/gimifotabemorara.pdfIn PDF document text
    • https://takoxoja.weebly.com/uploads/1/3/4/3/134371043/redoto.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/subud/75147854653.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/dixunoxusikukagubaxitaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/6483/2412/files/pasogawofovetaraxisaxa.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_off00005f86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F86 4840 bytes
SHA-256: f7290eacc8cfc0ac949b27c1fee2eceae76120932d084bfbc9cc3bc8aa1132c0
font_01_sfnt_off00006fe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE6 11320 bytes
SHA-256: e7aca2dfc1981ba3817e75e759834eca9fa8935f880acbf074aa1510c5a0e6c1
font_02_sfnt_off0000965e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x965E 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e