Malicious PDF — malware analysis report

Static analysis result for SHA-256 0045aeb1e8c81556…

MALICIOUS

PDF

45.1 KB Created: 2020-10-29 04:29:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 8569b4bf51e13d3ca9427192d7c2e67c SHA-1: de9343850e71eaebe6a3e5fa9926cda4e0ede4ab SHA-256: 0045aeb1e8c815569a4d144123b52ba836b6bbc280cb110b633e839e34ed5d37
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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 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.
  • 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/strik?keyword=biotech+pro+reviews In PDF document text
    • https://zonebudufekepok.weebly.com/uploads/1/3/4/3/134382159/sinefexixowol-kemudim-xalexugizu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388824/normal_5f9a1747b6fef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369516/normal_5f8b75996f7cc.pdfIn PDF document text
    • https://wajiresejepo.weebly.com/uploads/1/3/0/7/130774962/ritiluxiditupofuvod.pdfIn PDF document text
    • https://modurofeg.weebly.com/uploads/1/3/4/3/134376635/mukilopulofonoku.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/1/0437/5730/6007/files/wels_call_report_april_1_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/3424/4795/files/noodle_house_menu_billings_mt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e54f98f2-6b79-4cc3-b97a-68f1a34e94f3/ryse_son_of_rome_spqr_collectibles.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b1bd70d-d0de-4555-bd4d-26b5423f97a7/dudigupiradunifudapata.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/the_hobbit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b6eff32-21c2-43cf-9193-3ae56601e78a/el_poder_de_la_mente_positiva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89fc4196-dfcd-4d78-ba32-1a770753c8c4/18802348186.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75d697f0-f641-439c-a056-49e0850a59b0/75789509481.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd3d2b8e-c843-458a-a186-f5c6c083e265/23726865308.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/north_iceland_official_tourism_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/10617343468.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_off000073c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73C3 4980 bytes
SHA-256: 406525775068b968e5d504f0fff631a6363b15ac9434f4083bf8381cff0137fb
font_01_sfnt_off000084ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84CA 10208 bytes
SHA-256: 9097bda846595e5e8e5acb861c86d019d65e576d785687189c139ea83bc249ee

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