Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6f9f95d92564417…

MALICIOUS

PDF

61.6 KB Created: 2021-02-18 20:14:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 5d1492491b554efb81c583b016cf5e21 SHA-1: a8b481aaae83c6b498c6a40ba2cb182e453bfa23 SHA-256: d6f9f95d925644178585538faa15b326bc520a492a07d589b88393fa6f08c10e
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://jottigo.ru/wix?keyword=o%2527connor+high+school+baseball+roster PDF link annotation
    • https://cdn.sqhk.co/terasovo/jhcdiiU/sesabat.pdfIn PDF document text
    • https://cdn.sqhk.co/bidelefo/gjhjujg/free_tv_apps_for_android_apk.pdfIn PDF document text
    • https://fomunova.weebly.com/uploads/1/3/4/6/134684458/xawodobag.pdfIn PDF document text
    • http://redtea.space/shih_tzu_puppy_feeding_guide5tcfz.pdfIn PDF document text
    • http://chestlune.online/tifamesurobaduso3uohh.pdfIn PDF document text
    • http://itali-big.space/40238262599gqxu3.pdfIn PDF document text
    • http://masito.space/38106158300057w8.pdfIn PDF document text
    • http://ibkreactiva2020.com/2022935001944y0e.pdfIn PDF document text
    • http://robinmani.site/zesojekilawopexiripenonif5mjre.pdfIn PDF document text
    • https://cdn.sqhk.co/jeforije/jgugeuZ/burger_shops_near_me_that_deliver.pdfIn PDF document text
    • http://rubyshup.space/free_inductive_bible_study_worksheetsk0g8p.pdfIn PDF document text
    • http://foyou.store/64203010817euafb.pdfIn PDF document text
    • https://cdn.sqhk.co/pabelewexo/icAlkKZ/how_to_write_business_plan_example.pdfIn PDF document text
    • http://maska-respirator.shop/22468851221h4vce.pdfIn PDF document text
    • http://lbaranaydin.com/xotubevebizapu23m23.pdfIn PDF document text
    • http://itayoga.space/suxobesan2534.pdfIn PDF document text
    • http://ilkertr.shop/zekesozatabajapezovubeponc1ox2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000b704.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB704 5260 bytes
SHA-256: 05fe2e1e6c7f0c1eca2d554d9ba6c5f09f948a60d89796dd041ed194a9b36e81
font_01_sfnt_off0000c8e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8E8 9484 bytes
SHA-256: b99a92db3d2bb8b5afa6ae85a8daed14567a3275ff48fb957b499aaf012895e4