Malicious PDF — malware analysis report

Static analysis result for SHA-256 e61e1630bc1c9ba8…

MALICIOUS

PDF

73.3 KB Created: 2021-02-23 15:24:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 6c1a5277c995b7351a3778bb2a46581a SHA-1: d15a8ab7b9171f7ba2ee952fe14e481ae71abfd0 SHA-256: e61e1630bc1c9ba8c09ffad68231b0deded149896bc106e316f0d968954e43b3
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/strik?utm_term=how+much+do+you+get+paid+an+hour+at+zaxby%2527s PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4497356/normal_602fed52ceae1.pdfIn PDF document text
    • https://vakozumemarob.weebly.com/uploads/1/3/1/0/131070483/pukanuno.pdfIn PDF document text
    • https://jawuvufos.weebly.com/uploads/1/3/4/8/134856807/6258132.pdfIn PDF document text
    • https://fesomexipilajuj.weebly.com/uploads/1/3/3/9/133997099/71ccce64.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384142/normal_60103fb83f2d9.pdfIn PDF document text
    • https://xezinaruwi.weebly.com/uploads/1/3/4/4/134479948/bedabesoziwi-sixujow.pdfIn PDF document text
    • https://bileravufal.weebly.com/uploads/1/3/4/7/134749654/wizetesixivogo_megis_diguromajarute.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416299/normal_5ffd269692f7f.pdfIn PDF document text
    • https://vipobonufemug.weebly.com/uploads/1/3/5/4/135401160/c24b70c21f64b.pdfIn PDF document text
    • https://sesirolomozanu.weebly.com/uploads/1/3/2/7/132741009/zepalugipifanep.pdfIn PDF document text
    • https://muxasikij.weebly.com/uploads/1/3/1/8/131872285/xuduxuzegowura-mapuride.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/35802536107.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/vidyasaarathi_application_form.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/reading_comprehension_test_with_answer_key.pdfIn PDF document text
    • http://mobisojew.epizy.com/rejebijumi.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_off0000e012.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE012 5900 bytes
SHA-256: 4cd549a7d599f81fcecdaab897c9b767ddfcf1dca01b969cc66b396b0341ba58
font_01_sfnt_off0000f423.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF423 10528 bytes
SHA-256: a8067507a96029c3aace144512a083e20521420084e869da2ba941ae2ff84891