Malicious PDF — malware analysis report

Static analysis result for SHA-256 d24b2c82959e60ba…

MALICIOUS

PDF

42.7 KB Created: 2020-10-01 16:44:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: c5f6c27427ba816d55005d8d714c8152 SHA-1: 96d92bc291ee056ff6752d2897dd8c257811e1a4 SHA-256: d24b2c82959e60ba343423c441fb5aac00ae5982a06752b54d4d2cd9039d51ab
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • 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=amputee+rehabilitation+pdf In PDF document text
    • http://pegeso.emaerreame.co.uk/uploads/1/3/0/7/130775176/fuwoxibadefugas.pdfIn PDF document text
    • http://kugivivog.ritecookware.com/uploads/1/3/1/4/131453960/f43badd.pdfIn PDF document text
    • http://files.emmanoelleclark.com/uploads/1/3/1/4/131437873/777c966189e115.pdfIn PDF document text
    • http://files.madebymystery.com/uploads/1/3/1/6/131606630/23e95609128e8a0.pdfIn PDF document text
    • https://site-1037897.mozfiles.com/files/1037897/luwer.pdfIn PDF document text
    • https://site-1036840.mozfiles.com/files/1036840/xotavoloko.pdfIn PDF document text
    • https://site-1037237.mozfiles.com/files/1037237/nukesujekewagow.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c055bc45-fdcc-4c5a-a9d2-27105f99113d/tawugesomiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2a04524-12e0-4490-942f-51b6382e3a9e/54998136678.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f55a23d1-5c80-4673-a6f0-8059c896b386/97800312711.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4dda1f9c-4282-4496-9095-bcf978463cb9/merijofipopizelo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0657/6800/files/laboratorio_clinico_cafam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/0359/5928/files/72931521213.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0468/1193/8970/files/consulta_de_procesos_judiciales_por_cedula_costa_rica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8362/6651/files/kunodufagudapuxadum.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A9E 5232 bytes
SHA-256: 6ab4d40001eb76bff73b9b9f515d02d7af7d3ae39cbceedb5c5bd0e7f99b067c
font_01_sfnt_off00007c36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C36 9936 bytes
SHA-256: d0470c8e9e489da9df889dad5761f9c6e1b6d39b5452e6a58a454eceaf4e10e2

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