Malicious PDF — malware analysis report

Static analysis result for SHA-256 06345e1e60f66bd9…

MALICIOUS

PDF

46.9 KB Created: 2020-11-04 02:11:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 27b99258356bf0511c7cb0b3642d7c60 SHA-1: 9e35ce9c72e78cf65c1d456dd7e723baa694a93e SHA-256: 06345e1e60f66bd9a6d9f22809f94b41921585b12d56b2cbf77861b02f11f2a3
124 Risk Score

Malware Insights

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

The PDF document contains embedded URLs that lead to a redirector and a link farm, indicating a phishing or malicious content delivery attempt. The document body, though heavily obfuscated, contains text related to gift certificate templates and the malicious URLs, suggesting a lure to trick users into visiting the malicious sites. The ML classifier strongly flagged this PDF as malicious.

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://cctraff.ru/aws?keyword=wording+for+gift+certificate+template In PDF document text
    • https://widobane.weebly.com/uploads/1/3/4/3/134340358/4767793.pdfIn PDF document text
    • https://kivuligob.weebly.com/uploads/1/3/0/8/130874143/8777662.pdfIn PDF document text
    • https://zotadipijipas.weebly.com/uploads/1/3/4/4/134467791/2593cbc.pdfIn PDF document text
    • https://digonowokeke.weebly.com/uploads/1/3/1/8/131856318/padutufesoxot.pdfIn PDF document text
    • https://pudegubazamase.weebly.com/uploads/1/3/1/1/131163945/zarekoxututi_koribif_gotexe.pdfIn PDF document text
    • https://lirutuve.weebly.com/uploads/1/3/4/4/134462413/5625617.pdfIn PDF document text
    • https://xavixikani.weebly.com/uploads/1/3/4/5/134502132/4b576.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/0a4552d2-95b3-486e-a23d-f27d148defbe/xeviwadigozu.pdfIn PDF document text
    • https://s3.amazonaws.com/divelatoxa/noguxunugusagumokurub.pdfIn PDF document text
    • https://s3.amazonaws.com/xopugup/69384596844.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/dcouper_un_fichier_en_plusieurs_pages.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c7d302d-416c-4b8e-922f-c103b25f73a9/kufejinonoviwana.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/refunakesovob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3f469bd-ebdc-49d6-b7f6-38a43b55c55b/bobbili_raja_telugu_mp3_songs_free_d.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_off00007707.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7707 5308 bytes
SHA-256: 3cad18a1320b98718c84583a67810ba61f48268d094c455c53c5f7931117cd07
font_01_sfnt_off00008912.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8912 11128 bytes
SHA-256: 2fac15259d3471ee6f8e0e8078c1504173f29e1c57b93f46f1850fa023368f26

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