Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0de191057a18f21…

MALICIOUS

PDF

69.5 KB Created: 2021-02-24 13:42:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d03e0b3feab857edf1f188ecc759dd56 SHA-1: 1fe8adfa9600d02ea2b20db9fed44eaaa5e5b036 SHA-256: c0de191057a18f21b961a92df3351f304557399d29bda5b9e4a071d5eecacf47
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/wix?keyword=tweakbox+apk+2020 PDF link annotation
    • https://wubinuju.weebly.com/uploads/1/3/4/6/134642725/681101759f6ca.pdfIn PDF document text
    • http://insta-sale.site/74326161521v4xaf.pdfIn PDF document text
    • http://lazadacostumercenter.com/english_grammar_learn_practice_tests_level_b1_2019srhhz.pdfIn PDF document text
    • https://menesifewo.weebly.com/uploads/1/3/0/8/130814293/7a2005398940.pdfIn PDF document text
    • https://gapefupekud.weebly.com/uploads/1/3/1/8/131871489/fininofedibimib.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409413/normal_60115176ba82f.pdfIn PDF document text
    • http://fruit-ita.fun/57920388572pnyv8.pdfIn PDF document text
    • https://nifirasevaxo.weebly.com/uploads/1/3/4/7/134756957/f7c46258d37c7d.pdfIn PDF document text
    • https://ruzuxopamekegi.weebly.com/uploads/1/3/4/7/134748505/rikegugumelut_bibexitikipuvu_sixivonek.pdfIn PDF document text
    • http://copyrightsupportforlnstagram.com/lennox_mini_split_error_code_f07th65.pdfIn PDF document text
    • https://vevuduwas.weebly.com/uploads/1/3/0/7/130775740/1882723.pdfIn PDF document text
    • https://pudabesipewoz.weebly.com/uploads/1/3/0/9/130969441/fufuxexirope_wujudezuz.pdfIn PDF document text
    • https://nedudefo.weebly.com/uploads/1/3/4/3/134389218/3865864.pdfIn PDF document text
    • https://gikuxowatevu.weebly.com/uploads/1/3/2/6/132681634/3768658.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/jusagi/tadawisipodovimed.pdfIn PDF document text
    • https://s3.amazonaws.com/tesasubawalozan/basic_piano_sheet_music_with_letters.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_off0000d51a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD51A 5096 bytes
SHA-256: ba6ecf9fc7649fab99b07dec59a7c9706065df3b389e66dbe687ab337966fd28
font_01_sfnt_off0000e69a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE69A 10120 bytes
SHA-256: a86d5e60fe977ce833e5ea824e3f32298a74e44577d6c92b796212ba31dab919

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