Malicious PDF — malware analysis report

Static analysis result for SHA-256 a032a05e63b121b1…

MALICIOUS

PDF

65.0 KB Created: 2020-11-26 21:35:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: e69703b62cea3c7012a80ffc5f0d7705 SHA-1: f279b39e6dd8e5d6afe5481195dc31bde2b43f7f SHA-256: a032a05e63b121b17f4b0694f9a0558165fda78050ccfae40e833e4a411b344b
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains a large number of external links, many pointing to PDF files, suggesting a link farm or redirection mechanism. The primary malicious URL identified is https://traffnew.ru/aws?utm_term=translation+french+to+english+pdf+file, which is likely used to host or redirect to a phishing or malware payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://traffnew.ru/aws?utm_term=translation+french+to+english+pdf+file PDF link annotation
    • https://polabufasol.weebly.com/uploads/1/3/2/8/132814050/812f952889b75.pdfIn PDF document text
    • https://vekosakebasagi.weebly.com/uploads/1/3/4/7/134743747/2407315.pdfIn PDF document text
    • https://peniwomafases.weebly.com/uploads/1/3/4/7/134705361/8047868.pdfIn PDF document text
    • https://bezebaterizijir.weebly.com/uploads/1/3/1/3/131384714/95ae540f.pdfIn PDF document text
    • https://xizotikozuza.weebly.com/uploads/1/3/4/5/134587863/4471047.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/7c371076-d98d-4462-a30f-3d0e62eb50d2/voxalujopesije.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d0c8225-f3cc-49d1-af99-b0f3af7b2cf8/selonapiromafilerinid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac106cbf-38ff-4a27-b623-16a6254ddda1/padeliweno.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6778baec-1394-4cfc-867a-a8125e625612/76027544132.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f53da27c-c2ca-48d0-88a3-1e71b16dee13/the_waters_of_babylon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04c35473-39e7-4b7e-8fb5-87f8afbe1aac/81903800568.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_off0000c18d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC18D 5368 bytes
SHA-256: 8b16832492fdb565a728dbe1beb48a752281e2059f3e1904b08d233796da1bef
font_01_sfnt_off0000d3c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3C2 10576 bytes
SHA-256: e5d517337d5e2445345de1842bc54f1441e4814f8b6c4c7ef7654721bef4d479

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