Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdc1cecc988a1236…

MALICIOUS

PDF

73.8 KB Created: 2020-12-25 20:14:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 3ec76529d4ec854d70093d838e8f4e22 SHA-1: b3168b787644ac51ca04941a67f2b2a3196cdac5 SHA-256: cdc1cecc988a123649d6fbe992e629e49e01de356ac929b26cbd5479b7dca51a
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a suspicious domain, likely as part of a phishing or malicious content delivery scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to exploit user interaction to navigate to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffset.ru/aws?utm_term=peroxido+de+benzoilo+pdf PDF link annotation
    • https://cdn.sqhk.co/zatugudaxaji/SbM2wVN/46269471409.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500183/normal_5fc57003c5db3.pdfIn PDF document text
    • https://jixisejilikabow.weebly.com/uploads/1/3/4/2/134265892/mokulaxo.pdfIn PDF document text
    • https://cdn.sqhk.co/norifasil/icdvSoz/the_king_of_fighters_movies.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468554/normal_5fa3a0fdd66bf.pdfIn PDF document text
    • https://xomitemekebok.weebly.com/uploads/1/3/4/8/134881854/gumuvojuvajufasasuz.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/c224be7b-1a7a-445c-9abe-5ee944e2362b/deborewixisibotok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d85529fb-3498-4d74-9809-89383695e131/80391717676.pdfIn PDF document text
    • https://s3.amazonaws.com/xidulumexi/haiku_antologia_de_poemas_japoneses.pdfIn PDF document text
    • https://s3.amazonaws.com/bejenosugede/beltsville_academy_uniform.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4567eb8a-4686-45f7-89c0-52933d4825a6/delonghi_dedica_ec_680_how_to_use.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7602e27-fb2f-40e4-b3dc-c4936cc3d157/28129580764.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/82212225293.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/xajivatutupugu.pdfIn PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/16229573039.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61c48086-6176-4bb7-aba8-e45d03b938ae/95910750379.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/597d595f-da55-4efd-aeda-ea77fae7ea02/viveta.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_off0000e4ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4EA 4908 bytes
SHA-256: 290838cc43a0dad60ca0e6bdd3e71091660551b42f0b65191528cd3803613c41
font_01_sfnt_off0000f5b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5B0 10700 bytes
SHA-256: cc3b57818f83024f458a1bf39c46d96d71c223cb012bcc50c6fffb04e688b3ca

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