Malicious PDF — malware analysis report

Static analysis result for SHA-256 75133f96abad2f22…

MALICIOUS

PDF

48.4 KB Created: 2020-11-01 15:15:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: cc1d616d9a306452973682c6d5d668df SHA-1: d60ba4bf80336aac00c89df5f79de28b4c2de581 SHA-256: 75133f96abad2f2213368d9ed65982549f9a04a351e9a43b481ec079d17dfeba
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://cctraff.ru/strik?keyword=in+the+heights+2020+film In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370059/normal_5f89515401e5f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367278/normal_5f93dd5fe287d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366360/normal_5f87230706cb1.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/92194572.pdfIn PDF document text
    • https://viwuwobigoku.weebly.com/uploads/1/3/1/3/131378942/baruxeli_kotib_kolizazoresud_ditevolazizubak.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387582/normal_5f9d9e3a1aab7.pdfIn PDF document text
    • https://xijonezamo.weebly.com/uploads/1/3/1/4/131407630/xaburumit_lanobot_mepolax_gomoredinukapi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367938/normal_5f8f854f720a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383128/normal_5f95c45aa5e6e.pdfIn PDF document text
    • https://zewuxufasebi.weebly.com/uploads/1/3/4/3/134320084/ffae5209cbea3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369304/normal_5f8b2d98377bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426543/normal_5f9d516cbb060.pdfIn PDF document text
    • https://lewejasolon.weebly.com/uploads/1/3/1/4/131437246/jikapinudonamet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/22d6b3ee-e2c2-4d90-aab7-1798ad64464d/bunepizosoxetirige.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6085f611-f31f-467a-87d0-770de064cf8a/wigeredoxiretuloweke.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72AA 4764 bytes
SHA-256: d89face3c78077f0538c64bcaa13fea07587816f56f2bda29155a6800031ab2b
font_01_sfnt_off000082b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82B4 10412 bytes
SHA-256: 4278c2513daa3d62e8ad47e2a694610030762bd5de51f2e1c5362e97599765ee
font_02_sfnt_off0000a63a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA63A 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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