Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6ee18f3c7220dd7…

MALICIOUS

PDF

36.9 KB Created: 2020-11-07 01:46:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 14151cfe2ad2ea667bf245bd6529e969 SHA-1: 5ca69ffb7fb782bbb64912d318aaa8a670b4e0f7 SHA-256: d6ee18f3c7220dd72da44b692a04adee0506f5f134a691c766140ff022009061
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/aws?keyword=chemistry+chapter+8+review+answers PDF link annotation
    • https://lorovojiwu.weebly.com/uploads/1/3/4/3/134318747/pibegiv_padepanezim.pdfIn PDF document text
    • https://rufewukel.weebly.com/uploads/1/3/4/5/134599372/pateguxejiku.pdfIn PDF document text
    • https://firedisivimi.weebly.com/uploads/1/3/0/9/130969818/be5e9cf252db664.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://gixilegewe.files.wordpress.com/2020/11/mepanopozepuwamibakub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b98b2d25-5811-4900-a800-e92309b24933/material_girl_torrent.pdfIn PDF document text
    • https://fizafadolozu.files.wordpress.com/2020/11/31713389540.pdfIn PDF document text
    • https://sukifozupi.files.wordpress.com/2020/11/34381173610.pdfIn PDF document text
    • https://romekelisefo.files.wordpress.com/2020/11/nitunawikudaremutujozudok.pdfIn PDF document text
    • https://tevarew.files.wordpress.com/2020/11/88608638079.pdfIn PDF document text
    • https://niragadofob.files.wordpress.com/2020/11/31700805951.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4afa724-5e22-452f-b487-ba1d322e7eba/18241565346.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_off0000500d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x500D 5496 bytes
SHA-256: 3255a7a4c79d787388a075d58ee4d9f660b879c99a3ec6151b91c94c1ed0d8a3
font_01_sfnt_off000062aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62AA 10652 bytes
SHA-256: f17e830006de18174ce0d976e9719250cf71d8fb616c017b27ab5a6abd2b1308