Malicious PDF — malware analysis report

Static analysis result for SHA-256 011b5bb2b68799aa…

MALICIOUS

PDF

57.7 KB Created: 2020-10-19 11:52:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-28
MD5: 1c91c0319d32cb85c1f4f1c0e3259ce8 SHA-1: 7a189b2bd60ec57d1ce3cdca11a70f630a771c59 SHA-256: 011b5bb2b68799aae36e9d82a4983ec7ae17580233c12f2f488aea80863111e1
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://cctraff.ru/123?keyword=dictionary+of+chinese+characters+pdf In PDF document text
    • https://nogafuku.weebly.com/uploads/1/3/2/8/132815296/kixanimenenoz.pdfIn PDF document text
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/xegejiv_noraru_zonovoduborebo.pdfIn PDF document text
    • https://megadezatesaram.weebly.com/uploads/1/3/0/7/130776649/genamomarumijawusaso.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/vepulakanug.pdfIn PDF document text
    • https://wivupenoremew.weebly.com/uploads/1/3/0/7/130775018/7443628.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/sixukejomiwewanage.pdfIn PDF document text
    • https://gemaxudemaxepeb.weebly.com/uploads/1/3/1/0/131070646/wugipesobikuv-lokupiz-sarelived-lifoleru.pdfIn PDF document text
    • https://vimiwegom.weebly.com/uploads/1/3/0/7/130775837/pobatofebebo_lizofetus_pawotefowufik_sifedulaf.pdfIn PDF document text
    • https://rajomiluti.weebly.com/uploads/1/3/2/6/132682989/615bfaa9afa8c.pdfIn PDF document text
    • https://jubunukaf.weebly.com/uploads/1/3/1/4/131483214/disizofevupoteja.pdfIn PDF document text
    • https://zalawevovupat.weebly.com/uploads/1/3/0/9/130969727/3539753.pdfIn PDF document text
    • https://xawuwotogot.weebly.com/uploads/1/3/2/6/132695388/jifuza.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000a49b.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000a49b.bin)
    • https://uploads.strikinglycdn.com/files/1022dc7d-668e-4911-a0ac-b9681724ecb2/1593847451.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63fb0272-62fb-4002-8237-add53d175871/vafofeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2684/8661/files/paper_mario_color_splash_roshambo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/1886/0729/files/36159007640.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4756/2645/files/lexington_district_4_ecc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/7481/7693/files/witadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0156/3301/files/uchicago_iop_instagram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13635977-56ba-40f5-abac-46b291cdf2a7/sufizejepawel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4380d25d-39cd-4346-b205-d3767f46ba09/webowupedasokupodasaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58ada231-20c1-417d-9338-1ada43d86dae/perivofo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbfc4b25-4b8b-4ef1-bc0b-7f7bf4480a7b/xekenusakogox.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 extracted file (font_00_sfnt_off0000a49b.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a49b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA49B 5312 bytes
SHA-256: c4f1856c70b4985e033dca610802c1dc79e25f3aef8e5339c2cdf028f4931a55
font_01_sfnt_off0000b6ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6AB 10100 bytes
SHA-256: ebce69d2145e61a074649e0cfb3dd712fab96bd07ce8c2f0d1f80c56d89fcd02