Malicious PDF — malware analysis report

Static analysis result for SHA-256 3eb5101e5c671a9e…

MALICIOUS

PDF

47.9 KB Created: 2020-11-06 21:38:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: b159e08b4b70e4f2fc249046703e662d SHA-1: 2f52773303eb852bc6e954f5a04759e9f9a5d26c SHA-256: 3eb5101e5c671a9eb99f50b13eea5e837d7236e6df33fe721eba34d4294a623f
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://traffking.ru/aws?keyword=zelda+twilight+princess+forest+temple+guide In PDF document text
    • https://porimejonawi.weebly.com/uploads/1/3/4/3/134368737/720cd378ce4e923.pdfIn PDF document text
    • https://vilewufatavak.weebly.com/uploads/1/3/4/5/134585542/7785944.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368762/normal_5f8918cd5d520.pdfIn PDF document text
    • https://sesuwulot.weebly.com/uploads/1/3/1/4/131438847/f13ad.pdfIn PDF document text
    • https://xuguzopagar.weebly.com/uploads/1/3/4/4/134490213/5798158.pdfIn PDF document text
    • https://nalabusapigo.weebly.com/uploads/1/3/2/7/132740218/7946801.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370087/normal_5f99f4ab026e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457330/normal_5fa12235f0cd3.pdfIn PDF document text
    • https://natorepoxikafop.weebly.com/uploads/1/3/4/3/134314237/vidupofuka.pdfIn PDF document text
    • https://nokurujifeseg.weebly.com/uploads/1/3/4/3/134355409/7037307.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/leguvefu/86811210057.pdfIn PDF document text
    • https://walojom.files.wordpress.com/2020/11/puvidejufujumesedonuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50b4a201-da51-4f29-9b0e-a371dedaee09/pazimenekisofunudaba.pdfIn PDF document text
    • https://matodokabaj.files.wordpress.com/2020/11/kopagomu.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_off00007bec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BEC 5620 bytes
SHA-256: 14c5da2e68698862a546559dc6d185d154af952cae252d0839f15f5a9c9df56c
font_01_sfnt_off00008ef8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EF8 10580 bytes
SHA-256: 30845818449c77b729da837f82381b7ee6e2d28e1ff87c9ce5d412a13ccce6af