Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac85fcf639099bdf…

MALICIOUS

PDF

41.4 KB Created: 2020-10-15 08:43:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 62619caeb27475b0de2292e59324c09a SHA-1: 60eb9889d67c306e18a6715a63e03f9d627aa0f9 SHA-256: ac85fcf639099bdfe02b21bf01767d511665bdcfd51e9af5ae641a7218b59ff4
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://ggtraff.ru/123?keyword=active+directory+basics+pdf+microsoft In PDF document text
    • https://riwisasivituw.weebly.com/uploads/1/3/1/0/131070703/9400458.pdfIn PDF document text
    • https://vevejeda.weebly.com/uploads/1/3/0/7/130776099/pugofabo-dologoruwiz-xavofiwukajuzi-tunesutowib.pdfIn PDF document text
    • https://gemenudotipetal.weebly.com/uploads/1/3/2/6/132695720/7655572.pdfIn PDF document text
    • https://gamupizesusaza.weebly.com/uploads/1/3/1/3/131398140/wuzave.pdfIn PDF document text
    • https://site-1048245.mozfiles.com/files/1048245/49716126291.pdfIn PDF document text
    • https://site-1042094.mozfiles.com/files/1042094/21763358109.pdfIn PDF document text
    • https://site-1038601.mozfiles.com/files/1038601/12640476442.pdfIn PDF document text
    • https://site-1042781.mozfiles.com/files/1042781/sojajiwewi.pdfIn PDF document text
    • https://site-1043153.mozfiles.com/files/1043153/10811529330.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366408/normal_5f876c32f3542.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365652/normal_5f876f25b2113.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367947/normal_5f87d52955580.pdfIn PDF document text
    • https://fadusoga.weebly.com/uploads/1/3/0/7/130739873/c2e2df821.pdfIn PDF document text
    • https://dapujevubo.weebly.com/uploads/1/3/1/4/131438680/b25b27.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/pejajofedaxevaw_kozadesupuke.pdfIn PDF document text
    • https://nudojafobedem.weebly.com/uploads/1/3/1/3/131379550/giruxovipoto-sivediberapuno-wasikupevexoxog.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367643/normal_5f87794ed6d3b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368248/normal_5f878d07d9a65.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/020e8ec6-4843-4be0-8649-72eb0e90e0a3/42193392113.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8eea8c03-fbc0-4fbc-893a-21d26700ab06/badesogesovegawuvozurifuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5389159a-96dc-4873-beca-1686c551f36b/76836549965.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63DC 5560 bytes
SHA-256: 1b85ca2d4d0f6667fee409bb50bb08284d49dea71662491c3c61f478cfe5aabf
font_01_sfnt_off000076ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76AC 9788 bytes
SHA-256: 485cafaeb37a5319d54733f6d190ec2185fcf71bd1c4d4230882e5a967b24893

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