Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2a52c0187cfd73d…

MALICIOUS

PDF

70.0 KB Created: 2020-11-11 12:23:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 281bb55d300edcec061cdc0eb812fc91 SHA-1: 6eb5ea03bd2af390fa1d0b2b4667dd3b22676653 SHA-256: c2a52c0187cfd73dbc87cc97ae9c1093ec335f06428d3df080a95f0fb9ff77e6
96 Risk Score

Malware Insights

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

The PDF document contains a URL that appears to be part of a phishing or scam campaign, masquerading as a "best buy" offer. 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 redirect users 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?keyword=best+buy+acer+aspire+laptop PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4421200/normal_5f98c51b16dfc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367621/normal_5f88ba530e76d.pdfIn PDF document text
    • https://jesasifewom.weebly.com/uploads/1/3/1/4/131453969/gakita.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370088/normal_5f97e5d43d6bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366949/normal_5fa1823760380.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/d096f048-f19e-44b4-b06c-57e36acb4c69/12x7_garage_door_prices.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93229c99-c97c-402c-9d2c-1c38088bc608/52556661917.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ffac18a-4bfb-4f7c-b7f9-61444bd33465/tigejewowevag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0df9a546-d324-436b-a7f3-5c19a1cd2c07/16371930473.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/cuidados_de_enfermeria_del_cordon_umbilical.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/bill_nye_motion_worksheet_8th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/endodontic_treatment_procedure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90b89a4a-6e45-41f4-9ab8-8912974e4015/40938187764.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_off0000d5bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5BD 5220 bytes
SHA-256: e4d801b4eabc29cc633e768af02112e59910f18f824dbcfe5df1653847af87e1
font_01_sfnt_off0000e792.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE792 10444 bytes
SHA-256: 003eef062e259211b50ebd30ec416ce5e6c58b103ecc528246de365eb583fd56