Malicious PDF — malware analysis report

Static analysis result for SHA-256 c690237c67d17c7d…

MALICIOUS

PDF

50.9 KB Created: 2020-10-15 09:27:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 0f2e216d0a42173409331756a824cba2 SHA-1: 7b7381a070a9bc8acfd3b22e46050b04938123e7 SHA-256: c690237c67d17c7de2a364adf7f4b9706bb381c64aeda7f57662e0c2a29072a8
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://cctraff.ru/123?keyword=manual+adapter+%25E0%25B8%25AA%25E0%25B9%258D%25E0%25B8%25B2%25E0%25B8%25AB%25E0%25B8%25A3%25E0%25B8%25B1%25E0%25B8%259A+olympus+om-10 In PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/xizaxamuxive.pdfIn PDF document text
    • https://wekubuzebebam.weebly.com/uploads/1/3/0/7/130739705/1652488.pdfIn PDF document text
    • https://zoveponezewuda.weebly.com/uploads/1/3/0/7/130738822/dukurofosali_wopuluribop_ziwusezutaweveg.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/7304884.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/nozejiba_riwufovemudes_vodimot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369788/normal_5f87dc0e044da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365536/normal_5f87441a869fa.pdfIn PDF document text
    • https://sesuwulot.weebly.com/uploads/1/3/1/4/131438847/xazukaxodizowuwas.pdfIn PDF document text
    • https://xuvakaxatal.weebly.com/uploads/1/3/1/0/131070170/9663994.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/ligewajinaxi.pdfIn PDF document text
    • https://liwevapazu.weebly.com/uploads/1/3/1/0/131071299/muzuva.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/gosibokuvefuj.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/4056517.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/5473886.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/8e42bfb8d1b0f.pdfIn PDF document text
    • https://seririgikum.weebly.com/uploads/1/3/0/7/130739922/ritonigatemibe-xuvezekamag.pdfIn PDF document text
    • https://gemenudotipetal.weebly.com/uploads/1/3/2/6/132695720/lopaxarusiw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/c8c574b0-080d-40eb-90f5-9e1853a5d5cf/wubigonelix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8562c5c8-fa96-452e-a7e6-64e6d806fc51/sowivemuli.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b92f84e-eb85-40a9-b391-e7eac3262419/vozokurilivekumodif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94585fe8-d1fb-420e-9eef-94d3e3f0a0b0/wasidokasul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bde721b8-04fa-4e15-bced-c589b15cbea8/beroke.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64CC 5272 bytes
SHA-256: 4954027646b9fa5b068543ed6a0862d9d3a464ba84e0c605e3ca7308d9ffbbfd
font_01_sfnt_off000076a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76A9 6872 bytes
SHA-256: eb6936cf7f77b4f91fbf55983561f8933c6de318c5c2c522a58c4fc35387a3ee
font_02_sfnt_off000088ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88EC 10728 bytes
SHA-256: d1570e812cc8faf4f71566916c6e0e7d87be69c71c0c7d1bc788cc297827881a
font_03_sfnt_off0000ad63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD63 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2