Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e9d87ca93809dde…

MALICIOUS

PDF

54.9 KB Created: 2020-09-18 08:27:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: eeb66ee895dbb592c0daf0c47899c552 SHA-1: f9e1a111df954be5d1dceb8e884aca5edef5b90e SHA-256: 5e9d87ca93809ddeee4e56d051e45db9ae5ec71ea25cd1361cc72468e61ab4e7
184 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on disposable domains. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that at least one of these links directs to known malicious infrastructure. The presence of numerous links suggests an attempt to manipulate search engine results or distribute further malicious content, aligning with a link farm attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.me/wix?keyword=saranac+lake+central+school+district+bus+garage In PDF document text
    • http://files.insideoutnh.com/uploads/1/3/2/6/132695361/895206.pdfIn PDF document text
    • http://files.maskinmarin.com/uploads/1/3/2/8/132814427/7052856.pdfIn PDF document text
    • http://files.homesnag.co.uk/uploads/1/3/1/3/131383743/vozapaponokad-godomitaw-bukonipibuve.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://a446b65d-45bc-45d3-9b62-7717749cfd33.filesusr.com/ugd/02af14_6945bb4637db4e8090d1ed8d74404e48.pdf?index=trueIn PDF document text
    • https://e1d37397-25b9-4b05-9fd0-2123fca4062f.filesusr.com/ugd/79cb75_1cba0f88555447f89b40df93a9c1a1b2.pdf?index=trueIn PDF document text
    • https://5eaa384a-2318-40f3-b159-68ce43e9aeb3.filesusr.com/ugd/dcbeda_9f8516544bff4ebd8359b9999a74eb11.pdf?index=trueIn PDF document text
    • https://3f4a0529-7f0f-47a1-bd48-7ba93a7ea03f.filesusr.com/ugd/a31856_1af0ace2a50c404da91452a300f676cc.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7175/0823/files/savefojiburivevemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/7833/5911/files/add_subtract_fractions_with_unlike_denominators_worksheet.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 3

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_off00008b7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B7B 5508 bytes
SHA-256: 8c1942dd4fc33fcfb60ec805cb0854f2704ff350c3bcc23938d2e90f9127bc53
font_01_sfnt_off00009e24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E24 15928 bytes
SHA-256: e4587562948afb51a55db59c72d9a6f10431a3667efad96948e97ae599a4352f

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