Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c09bcd6e988a82e…

MALICIOUS

PDF

47.7 KB Created: 2020-11-09 14:57:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 64e2d74ec0dd39f9789af62a9368a3bb SHA-1: 22ab86e7c85c27b67152b2907d4908f4b424c7dd SHA-256: 1c09bcd6e988a82ef70f206ece9f5dec94a3b2959930ad772f73b237b6860247
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://traffking.ru/aws?keyword=one+piece+ultimate+world+red+switch In PDF document text
    • https://nitaluba.weebly.com/uploads/1/3/4/3/134348735/xuxutejerijifun-lojorelidat.pdfIn PDF document text
    • https://bijifejutumaxob.weebly.com/uploads/1/3/1/3/131381781/c55a651cea8a42.pdfIn PDF document text
    • https://xavoxoxuda.weebly.com/uploads/1/3/1/3/131379246/sudejaruwele.pdfIn PDF document text
    • https://jaregufadux.weebly.com/uploads/1/3/4/0/134016720/xeritiwonuf_zaninal.pdfIn PDF document text
    • https://luwobidope.weebly.com/uploads/1/3/0/8/130814225/rorenufitivop.pdfIn PDF document text
    • https://turetufifej.weebly.com/uploads/1/3/4/5/134500159/873cb75e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372100/normal_5f8ca8b0e889b.pdfIn PDF document text
    • https://pevomoten.weebly.com/uploads/1/3/4/6/134626000/f1747ab9010b008.pdfIn PDF document text
    • https://xonimitofowe.weebly.com/uploads/1/3/2/6/132682232/2461809.pdfIn PDF document text
    • https://xulajaxosu.weebly.com/uploads/1/3/4/3/134366267/e4df8417ff.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/449ca7da-9d7c-45af-a4a6-966c95c105cd/88288001201.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/31224328691.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_off00007a01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A01 5432 bytes
SHA-256: e5709be9f70a5a44536d0fd153a5ad8f83a69a7c6ed3b07c6987cc928f82602e
font_01_sfnt_off00008c55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C55 10704 bytes
SHA-256: d272fff7d32ae90b564fdd3f7bcbb1fb927bfff85b959e8ca10bf4f01989e091

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