Malicious PDF — malware analysis report

Static analysis result for SHA-256 edd0bfba0fea5864…

MALICIOUS

PDF

124.2 KB Created: 2020-08-11 21:53:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: eceb3ba56bfb47d607a0d0dbbe3be6b2 SHA-1: 0682324f2e5e140e1684e4e265c77a77421764b7 SHA-256: edd0bfba0fea58645786aab1a5365f90fba2257bf152dad24ce091229e65896f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The embedded URL points to a redirector service, which is likely used to obscure the final malicious destination. The ML classifier also strongly indicated maliciousness. The document body contains metadata related to its creation, but no direct user-facing text that would indicate a specific lure.

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=fundamentos+de+fisico+quimica+gilbert+castellan+pdf In PDF document text
    • http://files.laurielehmann.com/uploads/1/3/0/8/130815014/5600696.pdfIn PDF document text
    • http://files.visitwithabe.com/uploads/1/3/2/6/132695388/7282667483b77.pdfIn PDF document text
    • http://files.maxrhodesarts.com/uploads/1/3/2/6/132683357/201db77b38e2.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/1/0433/0687/7080/files/mojijemorewowasimagaxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7188/7767/files/capital_structure_in_financial_management_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6304/9378/files/total_gym_2000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3421/4561/files/dasodexilur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6710/4664/files/muvekumebinuloj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0813/7128/files/aines_selectivos_cox_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/5026/6787/files/learning_styles_articles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7846/7222/files/defama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9135/9899/files/astm_a193_gr_b7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1877/8781/files/28905182090.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8638/8136/files/kenutukupozafexewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0676/0856/files/giwobigosimubamijotu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00019749.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19749 5696 bytes
SHA-256: 01f0510e17e493957eaaf60f8c182a8ac54090484c52b6a2ac8eee18ba39972b
font_01_sfnt_off0001aa82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AA82 18852 bytes
SHA-256: f7311388ff845ddb956c1f6a0702df1b8010734b59c7a046e6d6d9fa35a73fd5

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