Malicious PDF — malware analysis report

Static analysis result for SHA-256 949780d4b2ed9b55…

MALICIOUS

PDF

108.1 KB Created: 2020-12-26 16:52:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 87443f62c468811050755a82ea2e13fd SHA-1: ef8a828c556bc3dae405e9938eda3750c066d292 SHA-256: 949780d4b2ed9b55888872d656c05f1c6694760524335629007ea89c90d8ab8e
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 for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to lead the user to a malicious site, potentially for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9943

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://trafffe.ru/strik?utm_term=many+pathogens+that+cause+foodborne+illness+are+unknown PDF link annotation
    • https://lasaveba.weebly.com/uploads/1/3/4/4/134488520/2a5dee6da.pdfIn PDF document text
    • https://bakigimos.weebly.com/uploads/1/3/4/3/134322269/mijolag.pdfIn PDF document text
    • https://cdn.sqhk.co/kilatelazobe/HBOhhha/rifeba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402478/normal_5fb371231bd19.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/6cf6b63e-370c-40ae-a0c2-daf71aefc40d/i_can_be_your_hero_baby_lyrics_spanish.pdfIn PDF document text
    • https://s3.amazonaws.com/badodemebo/23904485778.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9987a6e5-3fcd-41d9-98a6-09cc9b2724db/multiplication_box_method_worksheet_free.pdfIn PDF document text
    • https://s3.amazonaws.com/mogedozara/jurnal_morfologi_gastropoda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1781e3f1-7e19-41cd-af51-5a64176b685d/araba_modifiye_program.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_off0001678a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1678A 5820 bytes
SHA-256: b39afcab7a44c7019e651140d911a1ecddbeb0858f02395b6d444bc87ac097dc
font_01_sfnt_off00017b75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17B75 11960 bytes
SHA-256: dacce0311194aac37278b9603bb40849568efecf36bb643d72fb74ff34499110