Malicious PDF — malware analysis report

Static analysis result for SHA-256 54b93721c8b495ce…

MALICIOUS

PDF

42.2 KB Created: 2020-10-29 05:17:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 61f184c4605d8a52b4f5020e19c9624c SHA-1: 62f93dc3c3c1bd5c47bfb889a0c73a1c50b0898a SHA-256: 54b93721c8b495ceba3af7b218ba0292da52754a1bb59f8f344f21568e381540
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/strik?keyword=virus+shawl+pattern+free In PDF document text
    • https://latenenagizogip.weebly.com/uploads/1/3/2/6/132696064/koxevexonafolegalig.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371786/normal_5f8a4e9c388df.pdfIn PDF document text
    • https://vixijusodu.weebly.com/uploads/1/3/0/7/130776714/493388.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370528/normal_5f96689b56cfe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373997/normal_5f97d816da29d.pdfIn PDF document text
    • https://kixatefibav.weebly.com/uploads/1/3/0/7/130776592/fidelozazawokomisef.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/jixidused.pdfIn PDF document text
    • https://takijotirodone.weebly.com/uploads/1/3/1/6/131637658/6e1d5a156.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367916/normal_5f91ff51df6bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367304/normal_5f888c37a1477.pdfIn PDF document text
    • https://nitiruminaxodax.weebly.com/uploads/1/3/0/7/130738633/kivubisixunukifafi.pdfIn PDF document text
    • https://roninuvanajeg.weebly.com/uploads/1/3/1/3/131379749/vupiwavazewirobodir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409619/normal_5f946b1c1b0d1.pdfIn PDF document text
    • https://fulipevaxavu.weebly.com/uploads/1/3/2/6/132695351/9440874.pdfIn PDF document text
    • https://lipowuripipu.weebly.com/uploads/1/3/1/3/131378852/176df2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2735/8115/files/fallacy_of_overgeneralization_examples.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_off00006807.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6807 5048 bytes
SHA-256: b0aeec22b0c2505f408794e74f7b27cbd8d95892207346293e8757d5c01f601f
font_01_sfnt_off00007946.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7946 10300 bytes
SHA-256: b8915555cc80f7d70b2f7e1168777d60778a19b7810e787ffb1cf523fb95381a

Open this report in the interactive analyzer, or submit your own file for analysis.