Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d0ef936e85ae86f…

MALICIOUS

PDF

71.9 KB Created: 2020-11-25 05:28:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2db912b86e89c42f75c93c993998b5e8 SHA-1: 34f08703ed007ec59d4cc714cf69936c4b107231 SHA-256: 1d0ef936e85ae86ff73d9358612b9f56fa7e878f9c1bd22c23bbc04be2019336
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffmen.ru/123?utm_term=love+dragon+neverending+story In PDF document text
    • https://jaketomerinojox.weebly.com/uploads/1/3/4/1/134109184/vizadekiron.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/jinitorip-bolag.pdfIn PDF document text
    • https://beritugemob.weebly.com/uploads/1/3/4/3/134332724/7921653.pdfIn PDF document text
    • https://wikamarelifegef.weebly.com/uploads/1/3/4/3/134380256/ledal.pdfIn PDF document text
    • https://zozolexiwu.weebly.com/uploads/1/3/4/3/134343356/2d457.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448096/normal_5fadbbc1243cd.pdfIn PDF document text
    • https://xijuxesipokufi.weebly.com/uploads/1/3/4/0/134042605/rujabibibajokej.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454968/normal_5fa32758c20f7.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/6512de1f-91a8-42a7-ae16-00e85de95011/jasepivaw.pdfIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/arm_architecture_reference_manual_armv8-a.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be0ffe3d-38af-4156-9184-cbdc7d8c0818/73097037841.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/878e93ae-8834-4e2b-9650-3fe86545967a/11859054731.pdfIn PDF document text
    • https://s3.amazonaws.com/vigevot/80883138806.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f519521-6ad9-4191-9e04-4fb40cf6715a/69859627471.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/365ceeb5-4be2-4efa-b332-87bd8119739a/this_is_marketing_seth_godin_free_pd.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_off0000dd19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD19 5064 bytes
SHA-256: efc8b9fd2dc8fe5151e26b7b641aaf9d769c40d6c0de4f2fcb30420260b9b223
font_01_sfnt_off0000ee71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE71 10652 bytes
SHA-256: b6be1ed1d484d7db0d73fcc810d88f7e8a28e9be5abfed55604ca7e184a30dec

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