Malicious PDF — malware analysis report

Static analysis result for SHA-256 837b55824901bc28…

MALICIOUS

PDF

44.9 KB Created: 2020-11-03 05:57:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 63333bbf1e41f0bc92d4f6e07614f81a SHA-1: 45578a3efd9c2e7dd7bdbf7a9a6254501b40d214 SHA-256: 837b55824901bc2863e205d21b911f602f61508ab9073bc7f1e4f16aea83dbf3
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://ttraff.me/123?keyword=sig+556xi+sbr In PDF document text
    • https://kuvofexe.weebly.com/uploads/1/3/1/1/131163751/6247835.pdfIn PDF document text
    • https://fabuxitewuf.weebly.com/uploads/1/3/4/3/134349615/revosinevukaf.pdfIn PDF document text
    • https://tosufiriro.weebly.com/uploads/1/3/4/4/134472590/bugesidebitug-foverezekamanu-warofelukede.pdfIn PDF document text
    • https://wivupenoremew.weebly.com/uploads/1/3/0/7/130775018/mifunikifabupa-senazu-remirem-ruvefir.pdfIn PDF document text
    • https://nuzilemuf.weebly.com/uploads/1/3/4/4/134479477/1655505.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/wotareropajewub.pdfIn PDF document text
    • https://galavalo.weebly.com/uploads/1/3/4/4/134464717/eeade9a.pdfIn PDF document text
    • https://gizarokidobibaw.weebly.com/uploads/1/3/4/3/134363860/vometasez.pdfIn PDF document text
    • https://nugaridepi.weebly.com/uploads/1/3/4/4/134474671/finep.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In 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/b44e6cdf-153d-477b-b6f8-3bc11e0ee772/21829007034.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed7250be-97d4-45fd-abc2-2dcf8ba216a8/wodanudeturavimidegevozat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7d851f0-80e9-40da-9e96-e3230cf1b77b/polikivazowuwofu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c8bc12f-dc96-4730-9f6f-4612db2e29cd/65463899778.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/019dad2e-1fe7-4128-8580-933b7c267402/45101128887.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000673f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x673F 1752 bytes
SHA-256: 89e85e01cd37a747a981c675e5a85609a747470ea4703856f450caedb7093d6c
font_01_sfnt_off00007005.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7005 5200 bytes
SHA-256: b93880eb7203aa981cc0e2f586150798d55b7ee2c48caed84abadd150e1d3488
font_02_sfnt_off000081ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81CA 10856 bytes
SHA-256: ff54fbaf848ec22106600ef7f9779acd9b53731fc26a095cd7e31154a0c94cf1

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