Malicious PDF — malware analysis report

Static analysis result for SHA-256 26802d2d5736c6a4…

MALICIOUS

PDF

50.2 KB Created: 2020-08-08 01:13:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5e860ed9ebb7bf073240f05189d822e4 SHA-1: 0c8526892b19c40f671221fed50a8c71ea1d5b92 SHA-256: 26802d2d5736c6a4bf4293d841d2b6b832ed8c86e88b6e3b9dd7cbcd52ed4b99
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. Additionally, PDF_SEO_LINK_FARM suggests a large number of external PDF links are embedded, likely for SEO manipulation or to host further malicious content. The primary IOC is the malicious redirector URL found in the document.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.cc/wb?keyword=punca%20keganasan%20rumah%20tangga%20pdf In PDF document text
    • http://files.chesapeakecare.org/uploads/1/3/1/3/131379246/8dd7d30ec4e9.pdfIn PDF document text
    • http://files.wanderwithsari.com/uploads/1/3/1/4/131407918/b3dc7f64eddc983.pdfIn PDF document text
    • http://pijubukiw.serenitybirth.com/uploads/1/3/2/6/132681504/4797011.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7926/2615/files/dorani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8424/3351/files/5029887477.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4872/9767/files/17069220775.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6519/6197/files/museo_nacional_de_historia_castillo_de_chapultepec.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2831/5293/files/gefowavuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4932/0610/files/83360411812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0743/4142/files/pavepepoduwoneze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89120948070.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5319/5165/files/jupixagefurejasedegekap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2675/0357/files/gadepasuwoxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1330/0647/files/75361340432.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46391305542.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 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B5F 5600 bytes
SHA-256: eddfeb1bcf8d21595cf4316dec01caf6fb7f5f5a3ccede3dc35a242d3f033f10
font_01_sfnt_off00007e47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E47 14900 bytes
SHA-256: 2730adc0a71ba2f956904fe05d25c7e335b01aac63382e012384ef4389f6bfd0
font_02_sfnt_off0000adac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADAC 3616 bytes
SHA-256: b4800b50660ed4d35fda90f79891a42d2477bca5d0aa99322b97501d9bd018e9

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