Malicious PDF — malware analysis report

Static analysis result for SHA-256 d84e6457023cd6a0…

MALICIOUS

PDF

56.2 KB Created: 2020-10-26 20:27:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 8ccee8615f003411d3a2559b89f86d04 SHA-1: dc0245ce5fc543538c24d6347d5ef4d4a6ffc3c7 SHA-256: d84e6457023cd6a020371f89c2153e502480e8a25208ce74242262ebbfbddf59
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 0.9999

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://ttraff.link/123?keyword=ohio+felony+sentencing+statute In PDF document text
    • https://wopuremob.weebly.com/uploads/1/3/2/6/132696580/04530c5574bc7.pdfIn PDF document text
    • https://pegepefip.weebly.com/uploads/1/3/4/4/134455730/pexozo.pdfIn PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/4752109.pdfIn PDF document text
    • https://dokakida.weebly.com/uploads/1/3/1/3/131380589/kavunowasat-wijorapurexeso.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371788/normal_5f9143a051554.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380531/normal_5f8ba11e68e9d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407777/normal_5f94d52994518.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379851/normal_5f8c7a25ba487.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369519/normal_5f888d5a01957.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385415/normal_5f9602dd54527.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384159/normal_5f96bc3b1690a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401696/normal_5f9574ce68136.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366401/normal_5f89da3640a11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366956/normal_5f8b82116bdaa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368777/normal_5f94e59311d33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366035/normal_5f88c7a07fcd3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376600/normal_5f93b2b4ba1d1.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/1/0480/9218/4740/files/jaguar_xk8_workshop_manual_haynes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/1508/5473/files/58318180302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/8530/7297/files/ai_ebihara_voice_actor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8693/2894/files/94389410108.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d35803b9-18f2-4d60-bb15-cfbe753e7102/36275510356.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5254fa93-67db-45d4-ba69-c51ae1f8271d/fazomuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b11de7f8-f438-45ab-a667-739dae72e74f/49184987538.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb2cc8bc-5ec0-40cf-a461-93dd4848b4e2/36550191948.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5347071-aa6a-49bb-bb10-af9a1c655946/zobiwepokikolexirulufela.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_off00009c51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C51 5176 bytes
SHA-256: 9fd8ae58daf80f3f9ffed04df221b65d2cf3e0a9397c736423f60bc6393329ea
font_01_sfnt_off0000adf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADF9 10876 bytes
SHA-256: c6deb2858041202540b94a7fd9cf14e91e2fe4080660503ae92ac31a140be68f

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