Malicious PDF — malware analysis report

Static analysis result for SHA-256 e534d1521cd5cafa…

MALICIOUS

PDF

41.1 KB Created: 2020-09-30 06:44:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 43d90e0ffefbebbc8306f558ea5442bc SHA-1: f8d7f4107928b91dbc17fd730c85c2149e930307 SHA-256: e534d1521cd5cafa5315cf5d413e9b10407630598a69c7df8f331af33e6ea4ef
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=active+transport+worksheet+answers+pdf In PDF document text
    • http://files.theconsciousbuilder.com/uploads/1/3/2/6/132682792/e39892c.pdfIn PDF document text
    • http://xetizu.ucdcowcalfassessment.com/uploads/1/3/0/7/130776007/71591.pdfIn PDF document text
    • http://files.getitfitteddotcarpet.com/uploads/1/3/1/0/131070792/fejebarimotupewaba.pdfIn PDF document text
    • http://xegipa.juliakur.com/uploads/1/3/1/4/131406821/8600af5071.pdfIn PDF document text
    • http://files.rnscmasters.org/uploads/1/3/2/6/132682093/jeluximazatumobago.pdfIn PDF document text
    • http://posad.intoactionsoberliving.com/uploads/1/3/2/8/132814930/7711327.pdfIn PDF document text
    • http://lekaga.saltydogtactical.com/uploads/1/3/0/7/130739038/lavijin.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/1/0431/5955/2155/files/17574059040.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/0839/3122/files/95261803637.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/1665/1669/files/emotional_manipulation_worksheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4f96072-25cb-404e-a0ed-e08472c4a4d7/14445674227.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56997a5e-1f2f-479e-8b7c-720425b52cf7/75311329690.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9170a603-49d2-4029-beb9-bab4919f3e0a/15260421062.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ca2e3cd-2360-4794-89c8-38471939d396/70343339639.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9239218-7045-4540-b5dd-17ef00c3e956/46780553084.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 7

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_off0000619c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x619C 5416 bytes
SHA-256: 9952003da4998229b1b8a60627464ce3fbc8626517f484f46d3f760ed031151c
font_01_sfnt_off0000741e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x741E 10580 bytes
SHA-256: 43446a921d39eda4300d3e14a742107c4bc5b0e8140d9daac041db50512dfda0

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