Malicious PDF — malware analysis report

Static analysis result for SHA-256 108750d772df43e3…

MALICIOUS

PDF

44.4 KB Created: 2020-10-17 08:13:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e1730e288f78d92c24c5290dd9092906 SHA-1: e1c83c931773aeac35776d38235507b8c465b714 SHA-256: 108750d772df43e33e87c89dd75db72492517b8ca4f2cf87ca988325af3331b5
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://ttraff.me/123?keyword=algebra+2+math+textbook+pdf In PDF document text
    • https://xazapadikud.weebly.com/uploads/1/3/1/8/131871762/bolukekusamesej-pipurufe.pdfIn PDF document text
    • https://givifajilodox.weebly.com/uploads/1/3/0/8/130874655/2939213.pdfIn PDF document text
    • https://fuvipizewovotat.weebly.com/uploads/1/3/1/0/131069886/3235999.pdfIn PDF document text
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/1559686.pdfIn PDF document text
    • https://nipufijupetobug.weebly.com/uploads/1/3/1/4/131482996/5538137.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/lanadez.pdfIn PDF document text
    • https://xawuwotogot.weebly.com/uploads/1/3/2/6/132695388/2395d167f0c77.pdfIn PDF document text
    • https://nakumupapetiz.weebly.com/uploads/1/3/2/7/132741615/giresevifexasedulo.pdfIn PDF document text
    • https://rezizeme.weebly.com/uploads/1/3/0/7/130775554/9546664.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/161604a5cb23a.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/28eeac72-2997-40d3-ba1b-852ce9d681ad/kemamufav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/417b6e5d-ad69-47d7-9c73-0d3f88c15fd9/sopogerosegufipesobo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73f1fd88-da69-4709-a896-576d1c1ef6b4/86399712616.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a61af252-d0fa-4a39-b076-c5862484c550/lomiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/daeb0912-c344-4610-b63c-f90f013f9ccf/rujubuliworokiwabuwabis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b91399c-117a-41ea-8a02-253e16bd905d/siwinaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cad2cb6-714e-4332-bd77-bbeeb2e6b0fa/4072916689.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0caf5b80-3fdd-46bb-9dbd-4f94812596a7/64010083347.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3603cea-aaec-428d-ae32-8cdd6696cd08/dawulajukivojawag.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_off00006d39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D39 5668 bytes
SHA-256: da8bec3182f6c2ca0faba1657123c60995eb2c5235f5a0f1f10c97ca9acf1c97
font_01_sfnt_off0000805e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x805E 10476 bytes
SHA-256: 4257542485ccadf959c825495b761d30e252ab568435a078ee0fa38545211574

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