Malicious PDF — malware analysis report

Static analysis result for SHA-256 445e8591c218b1c6…

MALICIOUS

PDF

38.3 KB Created: 2020-10-31 20:17:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-12
MD5: 11062403f0b714b5f7c6f28a26fac481 SHA-1: 64835c8648db75d4ece6e2748aa0fc1ed4aa5258 SHA-256: 445e8591c218b1c6e894dc6336cfd546203e6de9430d5b6a44a25570cb6205d3
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded links, many of which point to external PDF documents hosted on various domains. One of the primary links directs to a known malicious redirector infrastructure. The document's structure and content suggest it is designed to lure users into clicking these links, potentially leading to further malicious content or exploitation. 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.
  • 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/wb?keyword=teledyne%20continental%20motors%20manuals In PDF document text
    • https://viweposedijul.weebly.com/uploads/1/3/1/0/131070314/04e8357781d.pdfIn PDF document text
    • https://vodipewelo.weebly.com/uploads/1/3/1/6/131637384/3cd184a9944e1d.pdfIn PDF document text
    • https://wizaxonaguwaxi.weebly.com/uploads/1/3/4/3/134306690/9602240.pdfIn PDF document text
    • https://sokuvotaboraj.weebly.com/uploads/1/3/0/7/130776263/zupejomazegizonik.pdfIn PDF document text
    • https://xulajaxosu.weebly.com/uploads/1/3/4/3/134366267/mobesi_fajudoxufo.pdfIn PDF document text
    • https://subonotewus.weebly.com/uploads/1/3/4/3/134347286/tubizawalok.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/13462fce-f6c0-4105-a7b6-b59691229989/teoria_y_tecnica_de_grupos_psicologia_uba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8711c71e-1684-4ced-a5fc-35948c0f1bbf/kebaseregamefuxiva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf4db458-3fcb-47c1-bec9-b92f21a797a4/87464910077.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ddac9863-432e-4a89-acfe-eaf5a2079d3c/wamalewibijenixokifa.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/schwing_stetter_cp_30_batching_plant.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/merrills_principles_of_instruction.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/wodawadudopoxebab.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_off00005818.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5818 5136 bytes
SHA-256: 526d43f1c22745479a6f70c622299b243dcfe3e3e0a2a6c79f7cf898c36b1033
font_01_sfnt_off0000697e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x697E 10248 bytes
SHA-256: 984063a2580f11dc937738555f2dde1791b852af455d27f3268a6939c886baed

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