Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bacddec645fa1f3…

MALICIOUS

PDF

78.5 KB Created: 2021-03-02 16:02:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: edfdf57f9e9a0c27210bd2c0f8f8f170 SHA-1: 63b9f140f8305c888e5d5036c8ecb87774a375ae SHA-256: 2bacddec645fa1f3025717f8eecaca677ccafa8708d7af6d1d7f5a56ddad0b88
66 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains numerous embedded URLs, with one prominent URL pointing to a suspicious domain ('resalured.ru') that is likely part of a phishing or scam operation. The 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic further indicates that the PDF is designed to host multiple links on disposable domains, reinforcing the malicious intent. Although no scripts were explicitly extracted, the ML classifier strongly flagged this PDF as malicious, suggesting it contains obfuscated malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://resalured.ru/strik?utm_term=how+to+water+floss PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4465249/normal_5feaf08e83822.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387816/normal_5fe347008d2b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381095/normal_602ba164c0b48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371536/normal_600e21c5ea512.pdfIn PDF document text
    • https://totidulabi.weebly.com/uploads/1/3/1/6/131606487/4103723.pdfIn PDF document text
    • http://rameautbxy.space/bdcraft_1._12wkkz7.pdfIn PDF document text
    • http://sdfafq.info/how_to_set_up_brother_wifi_printer_dcp-t710wt90oy.pdfIn PDF document text
    • http://gooddevice-online.com/11879864735p8y0g.pdfIn PDF document text
    • http://on-arenas.com/20245226742u0smz.pdfIn PDF document text
    • http://design-kvartira.info/philips_respironics_everflo_service_manuali76tb.pdfIn PDF document text
    • http://expressday.online/slader_calculus_and_its_applications_13th_editionjy7xt.pdfIn PDF document text
    • https://zexiditituluw.weebly.com/uploads/1/3/4/7/134734655/tazesirikap.pdfIn PDF document text
    • http://jilet1.club/what_does_i_spy_with_my_little_eye_meanlfn46.pdfIn PDF document text
    • http://mesretly.xyz/sagobofakukugojonitubbu18k.pdfIn PDF document text
    • http://redirunna.xyz/bepiputarn73u.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wobuzisibal/barotrauma_for_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/vegan_recipes_for_beginners_book.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxexi/accounting_information_for_management_decisions.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_off0000f87d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF87D 4816 bytes
SHA-256: 55c26207edc6c80dcaea8e5336ffada5ac324b1802640b6d8c627ff00137fb70
font_01_sfnt_off000108fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108FA 10456 bytes
SHA-256: e2091078089abe1a8a0c59443718e5fc1c6016ca020a408c30af5f3fca2a440e

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