Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e870ba2f751cb7a…

MALICIOUS

PDF

65.3 KB Created: 2021-02-18 01:27:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1d58a70f295d1f997fc803a82be95d58 SHA-1: 80b536ef5f649a7818a9be015f93d301ddb00466 SHA-256: 2e870ba2f751cb7a7ec6533e839feb33efc590a08f69f0a4bb2eddc3e947ff1b
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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.
  • 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://jacksth.ru/wix?keyword=salesforce+user+manual PDF link annotation
    • https://nawopudupavipe.weebly.com/uploads/1/3/4/8/134856820/4490789.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427103/normal_6026d6afacf07.pdfIn PDF document text
    • http://daating19.site/44247415147t2lra.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369777/normal_5fd5f9620f27c.pdfIn PDF document text
    • https://wefizaxire.weebly.com/uploads/1/3/0/9/130969527/tuwulopuzag.pdfIn PDF document text
    • https://disebaxixifos.weebly.com/uploads/1/3/4/7/134714932/xipajaga_juxejupu_lanagevodi.pdfIn PDF document text
    • http://smartbright.club/dimofognvov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410965/normal_601db09f2213d.pdfIn PDF document text
    • https://kamararexunazo.weebly.com/uploads/1/3/1/4/131453861/d9fd02688e1cb7.pdfIn PDF document text
    • https://mulomaninivoxom.weebly.com/uploads/1/3/1/4/131437045/f3ae338abae2f.pdfIn PDF document text
    • https://fulotetaputu.weebly.com/uploads/1/3/2/7/132740707/kejemiza.pdfIn PDF document text
    • https://fewefemuge.weebly.com/uploads/1/3/4/3/134372507/kapupidejalege_fadiwe_xojijer.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xaxotuk.epizy.com/invoice_template_excel_doc.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_off0000c3cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3CC 5128 bytes
SHA-256: cf67b226da30858bfd6926fc7f2c1470ada6fbe3694f0f9dd7da4932e282ecde
font_01_sfnt_off0000d528.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD528 10416 bytes
SHA-256: 8f3f57b4d1c88624f228d3be16f961273a18e56dfd564d81521d0c8385e07b16