Malicious PDF — malware analysis report

Static analysis result for SHA-256 44594ed7800cb8ba…

MALICIOUS

PDF

41.1 KB Created: 2020-10-10 06:21:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-12
MD5: 314b58a21b7740f963ee48564ca7496c SHA-1: bec6e932ad58d3aa4a04d7ef74ee680c18fc568e SHA-256: 44594ed7800cb8bada5656b1ac2bbf0e4eaa8917741fb6e76c3e4e0cfd2fa7ba
124 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with at least one identified as a malicious redirector. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains URLs that are also present in the extracted URL list, reinforcing the malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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://gettraff.ru/strik?keyword=juan+de+pareja+met In PDF document text
    • http://files.readersbeware.com/uploads/1/3/1/4/131437669/dubevemir.pdfIn PDF document text
    • http://betiw.gabikomardixon.com/uploads/1/3/2/6/132681293/fekinugugulamebewava.pdfIn PDF document text
    • http://files.fotofringelondon.com/uploads/1/3/0/8/130814066/49fabc9b4c794.pdfIn PDF document text
    • http://jubed.francinesflowers.co.uk/uploads/1/3/1/4/131407492/2bb19acd73f34.pdfIn PDF document text
    • https://site-1036675.mozfiles.com/files/1036675/77151557806.pdfIn PDF document text
    • https://site-1037187.mozfiles.com/files/1037187/49024290126.pdfIn PDF document text
    • https://site-1036828.mozfiles.com/files/1036828/paxeraxemu.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/1/0438/3624/4118/files/constitution_scavenger_hunt_article_1_legislative_branch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20b8e8f4-7336-4c89-a551-60e02da67e30/66556982935.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/187ee6ca-65fd-4574-9b65-c8fecd6ce304/50797829625.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/696084ee-ba06-4e93-913c-7cbe001574a8/13826273304.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a94ea26-5492-4fb6-9b37-c293cb76ab74/narobikakonorura.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54cd69ba-70d6-466e-985b-8c557d3b6830/49775590769.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_off00006220.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6220 4960 bytes
SHA-256: 04e29977a987841ccbb7f503af5cc98e371ef58e31faf1bd6250f6de84b0139d
font_01_sfnt_off000072f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72F3 10944 bytes
SHA-256: 069d0f6c582a7582274bbc7f086559af56c9f8184e669594c2f95c447526ae96

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