Malicious PDF — malware analysis report

Static analysis result for SHA-256 37365df0d901f68f…

MALICIOUS

PDF

66.3 KB Created: 2021-02-25 19:35:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: d5d01afc91eb14b698a165f90f6d15de SHA-1: c2383a522bce7b95a086f1bbe1de4437000d5fc3 SHA-256: 37365df0d901f68fee31a60fa2fb153521065e5695352e2268672e973f7bf307
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://maypoin.ru/award?keyword=accu+chek+aviva+test+strips+coupon PDF link annotation
    • https://risixugetiso.weebly.com/uploads/1/3/5/3/135317557/d8e94cea.pdfIn PDF document text
    • https://lolemifazez.weebly.com/uploads/1/3/1/8/131871650/kajideduzowaruf_pirubonebalar.pdfIn PDF document text
    • https://jovinafunen.weebly.com/uploads/1/3/2/6/132695325/zetef.pdfIn PDF document text
    • https://fefokivaz.weebly.com/uploads/1/3/0/7/130776727/tataxuj.pdfIn PDF document text
    • http://covid-19online.site/naruto_shippuden_ultimate_ninja_storm_revolution_characteryjiur.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452373/normal_5fe00e6f6ad89.pdfIn PDF document text
    • https://dosidebeg.weebly.com/uploads/1/3/5/3/135318632/9015217.pdfIn PDF document text
    • https://cdn.sqhk.co/visesefider/Uhdgegf/final_fantasy_xv_character_creation.pdfIn PDF document text
    • https://rinezafuwokof.weebly.com/uploads/1/3/1/4/131437641/5467612.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464314/normal_601be903e2e3a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413977/normal_6016b4b6801c6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zufakugofozufi.epizy.com/google_dataflow_templates_github.pdfIn PDF document text
    • http://tujatubaniza.epizy.com/lux_guide_pro_builds.pdfIn PDF document text
    • http://dizoleline.epizy.com/sql_basic_books.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_off0000c5bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5BB 5104 bytes
SHA-256: 5f74fb27db7ab1264a1ff2f4536fa819a0f2ad647439ecec96c9f0f5696c05ea
font_01_sfnt_off0000d716.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD716 11008 bytes
SHA-256: 492f93766f86fc17838d1e8b3e65b8a8a9598d1726a85dc612a8e19f5c2792a4