Malicious PDF — malware analysis report

Static analysis result for SHA-256 d76ea0b3d8a702b4…

MALICIOUS

PDF

68.6 KB Created: 2020-11-18 18:33:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 68dcc62912f5d7d6c0ada555b696355a SHA-1: 02ff2c2b63d178d566ccc339696490791bb44b02 SHA-256: d76ea0b3d8a702b4bfb36eaf87494b2e95898944a798ed9c4e5030b6c522adfa
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ggtraff.ru/wb?keyword=dance%20ffxiv%20guide In PDF document text
    • https://vuriluwaloseg.weebly.com/uploads/1/3/4/4/134492921/ribek.pdfIn PDF document text
    • https://pejopazuzaguwoz.weebly.com/uploads/1/3/2/8/132815183/860693.pdfIn PDF document text
    • https://nezumise.weebly.com/uploads/1/3/4/2/134265586/8144767.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366947/normal_5f8d03b8c90ef.pdfIn PDF document text
    • https://gesoroserazam.weebly.com/uploads/1/3/4/3/134310447/6358896.pdfIn PDF document text
    • https://pidadilux.weebly.com/uploads/1/3/4/6/134666204/sesakaf.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/fisulefajow/77483457870.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a19c395-6dc8-464a-b334-ef9e1c6fe8c1/95923434817.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/negative_binomial_probability_distribution_equation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ec6a611-cfdb-4c9a-8a97-00800c8cca35/xuvomojojezipibave.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c6fbf69-0687-4bc9-be47-bfeb4b5a082f/xexakenuzokojijagomimokil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9d6fbcf-298c-4a34-8d38-467284e98a4d/wakutem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3dbecfbc-0008-4c9d-89dd-7e9243c11f3f/40813583175.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbf8a89a-2787-4679-9309-1bd6d4f863e9/ejercicios_de_acentuar_palabras_primaria.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9427c11b-d004-4f88-bdfd-40d44be2f1cd/bobcat_s300.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_off0000cfe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFE2 5008 bytes
SHA-256: 578e50af5068675514f8af301af0b9b4bcfc7a69b63f748ac1c9352603a4ba7a
font_01_sfnt_off0000e118.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE118 10728 bytes
SHA-256: b1526f464006f143eb4e1bc7f0c862bd283bf369402b120e9af794046b7930ff

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