Malicious PDF — malware analysis report

Static analysis result for SHA-256 832c66ab6b456498…

MALICIOUS

PDF

44.1 KB Created: 2020-09-18 08:58:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 88639a81da8bb3f39d79f4e9fd9b60d4 SHA-1: 8a9eaaca6ab4ed931a3dcb72ccc8ef137e75aa4e SHA-256: 832c66ab6b45649810fceea084e1db6b603fe494ce88e4e01f905a346b8821e5
184 Risk Score

Malware Insights

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

This PDF document contains a link farm designed to redirect users to malicious infrastructure. The primary lure appears to be a fake 'Windows check port is open' notification, directing users to 'https://ttraff.club/wix?keyword=windows+check+port+is+open'. The ML classifier strongly indicates malicious intent, and the presence of numerous disposable links on distinct hosts further supports this assessment. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

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://ttraff.club/wix?keyword=windows+check+port+is+open In PDF document text
    • http://files.jara4you.com/uploads/1/3/0/7/130740141/jubumu.pdfIn PDF document text
    • http://files.byronbayhealthycommunication.com/uploads/1/3/0/8/130813362/fotolofiwibalav-zopuzana-sazitupuwimasal-wananagomikela.pdfIn PDF document text
    • http://giguwutaw.emperatrice-maltese.co.uk/uploads/1/3/1/0/131070420/nowituge.pdfIn PDF document text
    • http://files.halcyonimages.com.au/uploads/1/3/1/4/131453421/3572532.pdfIn PDF document text
    • http://bunebaxi.jacquiconsults.com/uploads/1/3/1/1/131163962/5ac476d35d61.pdfIn PDF document text
    • http://kikemi.bsmcmilehighchapter5280.com/uploads/1/3/1/3/131381130/wisabul.pdfIn PDF document text
    • http://files.caritas-academy.com/uploads/1/3/1/4/131407424/4308411.pdfIn PDF document text
    • http://files.olgatarasova.com/uploads/1/3/0/7/130775434/pupolox-levafir.pdfIn PDF document text
    • http://satitaf.warwickkentphotos.com/uploads/1/3/1/1/131164157/4271505.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://650ef2cd-702c-427b-b68a-533551a80be7.filesusr.com/ugd/95089d_0866831eaecf403d977157efb54a4fb4.pdf?index=trueIn PDF document text
    • https://8ec53d9d-e760-4bda-b23e-d3b1199433a4.filesusr.com/ugd/008e52_1e7ea1e0224746809889b59f3e5aa932.pdf?index=trueIn PDF document text
    • https://8e4d43c9-9900-411f-9bbd-3f17a0961484.filesusr.com/ugd/e4d7df_b457e3162c644b8389a7d44e51e01966.pdf?index=trueIn PDF document text
    • https://52ad9e7f-e253-4cc0-98fa-743a454f6f0a.filesusr.com/ugd/a4c1fa_a1d43eb453154315a7acdcf5e8ac3418.pdf?index=trueIn 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_off00006fa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA4 5088 bytes
SHA-256: 6f9300f5a22364959e3fd2893f0673fafe0476dd2c0e7a353786a32cbc0b4779
font_01_sfnt_off00008109.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8109 10060 bytes
SHA-256: 2f1d4541d9133b5fa104722528c0f2886066ca576294d1394aa9845edaa75493

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