Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e59e55a2c55626d…

MALICIOUS

PDF

44.8 KB Created: 2020-08-20 18:40:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 53c4aed9047c6e4e3e35d73b74578d59 SHA-1: 24e7aa1616580ba640b500ec3c85626fa71b4d9e SHA-256: 4e59e55a2c55626d9da89d737726fb57f90ccfad62a7a9bad4e9d4f3fe23f0ff
194 Risk Score

Malware Insights

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

The PDF file contains numerous links, identified as a link farm, with one prominent link pointing to a malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure related to a 'blended learning journal pdf'. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or phishing pages.

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.ru/pify?keyword=blended+learning+journal+pdf In PDF document text
    • http://files.refugegarnethillart.com/uploads/1/3/1/4/131438240/salawo-vupiwekel-vifega.pdfIn PDF document text
    • http://files.thedigestivehealthclinic.com/uploads/1/3/2/7/132741110/fbee3ef7fa1.pdfIn PDF document text
    • http://pudulezuj.graphiclibrary.org/uploads/1/3/1/4/131437318/mevujodufilew_sefevuno_bosubunulun.pdfIn PDF document text
    • http://kejuk.tiftcountysoccer.com/uploads/1/3/1/3/131380591/vowawavabipowe.pdfIn PDF document text
    • http://sitas.masjidrasoolallah.org/uploads/1/3/1/0/131070374/muvodol-fenosasazosares-kuzululapawe.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/1/0431/2930/7287/files/wenujazisoforuvaja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1856/5270/files/vista_128fbp_programming_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2504/7463/files/94332760246.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96626323422.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4219/4083/files/zodifokava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3723/7148/files/96585297433.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rerotapok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3161/6923/files/zedawanirozorala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9849/6412/files/tosuvofol.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 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_off00007269.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7269 5156 bytes
SHA-256: ed9de973079d0906748c5d85201e5e08ae528ce666738495ab716e0d6e553320
font_01_sfnt_off0000840d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x840D 10268 bytes
SHA-256: edbc41808f2c7d353d180c16fd9abb5fcad327e082b3951ea61ba076924114ba

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