Malicious PDF — malware analysis report

Static analysis result for SHA-256 28ee1fed38c7cec6…

MALICIOUS

PDF

55.1 KB Created: 2020-10-06 12:25:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 188967f28930a378e46a35e791041664 SHA-1: 075d736a3d7e969408cbd26bfc253268e891253c SHA-256: 28ee1fed38c7cec6b86c7475196a1b69767f3d513e828a5dc21e716f24465d1f
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://gettraff.ru/strik?keyword=caracteristicas+del+procesador+de+textos+word+perfect In PDF document text
    • http://fugave.maryse-alen-vedicart.com/uploads/1/3/2/8/132814930/5723048.pdfIn PDF document text
    • http://files.owenmuirmd.com/uploads/1/3/2/7/132740296/38be3f9c65b7daf.pdfIn PDF document text
    • http://files.moiracain.com/uploads/1/3/0/7/130775275/1687db.pdfIn PDF document text
    • http://wutos.allysonshortle.com/uploads/1/3/1/4/131407014/3902131.pdfIn PDF document text
    • http://nikopif.adelina-graca.com/uploads/1/3/2/8/132814337/5ab888105b89ff.pdfIn PDF document text
    • http://tulito.skinnytiffy.com/uploads/1/3/1/4/131483468/3675400.pdfIn PDF document text
    • http://fuvejam.institutotathagata.org/uploads/1/3/0/7/130776855/c40bb3182ef131d.pdfIn PDF document text
    • http://kunoju.jamespaveysport.com/uploads/1/3/2/6/132696212/fobasat.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/1/0436/6286/8633/files/34248183920.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8606/1463/files/cabelas_smoker_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0184/2328/files/38969918072.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9148/7645/files/heat_transfer_specific_heat_problems_worksheet_work.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/3460/9317/files/industrialcraft_2_custom_recipes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47ce004e-507b-437b-a5d2-0b24857823b3/foxasebixonuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/806a2998-833d-4dde-89f5-14da724acbc8/bokurudexixuluwejefaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4be80d0e-1c6b-4218-a057-6e2e830e9a78/durulezogojojiwazek.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_off000097ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97AD 5212 bytes
SHA-256: 15098dd609a6bfd7d9df884bae35b1425e5131dca440581feb1462dd7a714ff3
font_01_sfnt_off0000a988.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA988 10832 bytes
SHA-256: 6db1287b60f3ed865617881af52162f04400ac216d018840467723566d5a4137

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