Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa87081a94d3339a…

MALICIOUS

PDF

38.2 KB Created: 2020-10-05 05:03:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-06
MD5: 4436622dde3e542a0a6a483557fde39b SHA-1: 24e8fdfdea9123df9a5fec7d1446170855f7722a SHA-256: aa87081a94d3339aef616a9c1e45a2ffe2d210fdc6983cb5cf4097cb644ed8fd
124 Risk Score

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 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/strik?keyword=inner+engineering+online+course+free In PDF document text
    • https://site-1037033.mozfiles.com/files/1037033/79851117211.pdfIn PDF document text
    • https://site-1043848.mozfiles.com/files/1043848/lakidur.pdfIn PDF document text
    • https://site-1042666.mozfiles.com/files/1042666/50432162459.pdfIn PDF document text
    • https://site-1042737.mozfiles.com/files/1042737/luzagegipufodom.pdfIn PDF document text
    • http://files.dantechch.com/uploads/1/3/1/0/131070538/kuvotojubakarivun.pdfIn PDF document text
    • http://vifogak.petervinthagen.com/uploads/1/3/2/6/132680813/tomazifor.pdfIn PDF document text
    • http://files.jenniferlovegironda.com/uploads/1/3/0/8/130874615/muwuwesera_liruparag.pdfIn PDF document text
    • http://veteve.spygamereviews.com/uploads/1/3/2/3/132302978/6b4966ae0a2e86b.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/1/0479/0789/7510/files/budobitudorabado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/4480/6042/files/a_love_to_last_march_6_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1705/1039/files/32226706680.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8371/8042/files/8173068604.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_off0000595f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x595F 4776 bytes
SHA-256: 061ba6cd2a25747ce7624c049ee8c2e91ac6b14a981514695c7903a381ca1918
font_01_sfnt_off000069ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69BA 10052 bytes
SHA-256: b3d279dffcbb4a65bb022cf109e930dd83dffcdd1023721f14ccd46da0961945