Malicious PDF — malware analysis report

Static analysis result for SHA-256 289b86c59b8e152f…

MALICIOUS

PDF

45.7 KB Created: 2020-10-14 20:35:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e4e89d862f1f7c9532b57789b22b4e1e SHA-1: b81233319f1668fc2d067c6138aaf495b884e359 SHA-256: 289b86c59b8e152f7549f3aac90eace396c59416623067e8a725efa65fe3b52c
224 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=hackear+wifi+android+2020+sin+root In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365582/normal_5f86f6390c0ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365627/normal_5f8736b6c019a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366000/normal_5f872d949d09c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366043/normal_5f8722a4d9404.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365655/normal_5f87239fa9c13.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/gapovowumepekegosiza.pdfIn PDF document text
    • https://kabudededawizo.weebly.com/uploads/1/3/1/3/131383409/dc102ab0b703.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/4045700.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366354/normal_5f8712736c92f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366302/normal_5f87364a4b4f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366405/normal_5f8710e848db6.pdfIn PDF document text
    • https://site-1042023.mozfiles.com/files/1042023/rapepudijeturovukugosika.pdfIn PDF document text
    • https://site-1040794.mozfiles.com/files/1040794/nademofexozujor.pdfIn PDF document text
    • https://site-1040224.mozfiles.com/files/1040224/9002885102.pdfIn PDF document text
    • https://site-1045392.mozfiles.com/files/1045392/vakezalumitexidinefe.pdfIn PDF document text
    • https://site-1037191.mozfiles.com/files/1037191/35912360644.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/1a38377b-3326-478c-91a0-01b33fffa10a/22189988425.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fc32d33-95a5-4469-bec3-dbc886129ea8/zuvemapine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48ad74af-ed37-4cd0-84be-0a5e866d72c2/50054058449.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/960a5b50-b38b-4550-8380-1b91f27df508/65839740883.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94ae0b47-2b68-473c-b6da-9b6db9fd8877/topet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7cd0d7fb-f72c-4b2f-bb6b-f94ca4e54062/18846040036.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcfdf12d-15eb-4569-b91a-1f46686ff25b/3595650032.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51679341-e371-489d-b68d-83c2919a8bf4/relisajodugelusoxawuxe.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_off000074c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74C6 5376 bytes
SHA-256: 1021beeab063478586b0ad82f68aab694b86f5fe280a714172eace33c3e1a182
font_01_sfnt_off00008727.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8727 10088 bytes
SHA-256: f0ab93dfa9d8e038d0b52cac9fd79f732d5bed20ae3e3d24dab15e9e6b5f65e9