Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e50d826082ac22c…

MALICIOUS

PDF

43.5 KB Created: 2020-08-12 05:36:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0721259e6bdb15a59bda0f791730a2bd SHA-1: a7d1bfe94f448e844b7c6b8ff4473851a37fd697 SHA-256: 5e50d826082ac22c436dea79eb27f47269405abd4734da454576b05c9f371902
194 Risk Score

Malware Insights

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

The sample is a PDF document that contains numerous links to external PDF files, many of which appear to be part of an SEO link farm. The primary redirector URL, 'https://ttraff.cc/pify?keyword=besluit+bodemkwaliteit+pdf', is flagged as malicious. This suggests the document is designed to lure users into clicking these links, potentially leading to phishing sites or malware downloads. No scripts were extracted from this sample.

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/pify?keyword=besluit+bodemkwaliteit+pdf In PDF document text
    • http://files.alessertraveledroad.com/uploads/1/3/1/4/131437246/523e05f35a.pdfIn PDF document text
    • http://keripukof.pitchperfectok.com/uploads/1/3/1/0/131070420/wefamurajaniz-ruxofoniwade-jizipuzijirid.pdfIn PDF document text
    • http://files.levusboutique.com/uploads/1/3/0/9/130969935/pivitenekarapevoba.pdfIn PDF document text
    • http://vaxapav.alyssacouturier.com/uploads/1/3/0/7/130740514/mofalijutatuvow.pdfIn PDF document text
    • http://files.bishopgumbleton.com/uploads/1/3/1/3/131379371/tokasinipegog.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/1/0433/9105/8070/files/75001311402.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/2960/5024/files/brothers_grimm_sleeping_beauty.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4863/8363/files/clases_sociales_en_chile_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0155/1771/files/mozisosopunu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/asigurare_auto_anglia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9140/9558/files/88486348689.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2073/7950/files/7407938826.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/8983/3639/files/amls_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9716/5728/files/ethiopian_grade_12_biology_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3521/4503/files/morgan_clinical_anesthesia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/16175378270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5744/5029/files/73438910952.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7373/9675/files/74847369685.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_off00006af9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF9 5436 bytes
SHA-256: e06cf55f41985fe62059bc8e2a5ad5fe7c4728c4ef0c5d1cfc7a66adb6fbfac5
font_01_sfnt_off00007d78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D78 10424 bytes
SHA-256: 2ff5758bf7f0d291f8f9fb6a2417f084b4d644e0929796c711bba49abe95028e