Malicious PDF — malware analysis report

Static analysis result for SHA-256 6aedd03d01edd0ad…

MALICIOUS

PDF

76.7 KB Created: 2021-02-15 12:14:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 18b6bdbf67cf694f49f19e9ba12da9f9 SHA-1: dda2c9ce85c2e2a205e243e3489b3b087ad307a2 SHA-256: 6aedd03d01edd0ad9a3e3fed7867ca38e5b87f1aa3c4cb5945a07d6173f27ecb
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/strik?utm_term=how+to+scan+double+sided+on+scansnap+ix500 In PDF document text
    • https://zideloxilatomi.weebly.com/uploads/1/3/5/3/135325243/zojibov.pdfIn PDF document text
    • https://rizafosukozesal.weebly.com/uploads/1/3/5/3/135346652/2000631.pdfIn PDF document text
    • https://xawizavikerid.weebly.com/uploads/1/3/4/5/134525990/6af4332d83ef8.pdfIn PDF document text
    • https://fumamefix.weebly.com/uploads/1/3/0/8/130873833/romomabaraler-zudogajoludox-rafeboja-satepekipusuziw.pdfIn PDF document text
    • https://poperetaro.weebly.com/uploads/1/3/4/8/134893078/soweturelimaba.pdfIn PDF document text
    • https://vomudata.weebly.com/uploads/1/3/2/7/132740307/vitoratokalut.pdfIn PDF document text
    • https://sorafenime.weebly.com/uploads/1/3/4/3/134320910/buboziresiw.pdfIn PDF document text
    • http://xipelosowux.22web.org/new_bengali_movie_in_720p.pdfIn PDF document text
    • https://daxigowopijadek.weebly.com/uploads/1/3/0/8/130814785/kopugoditimigu.pdfIn PDF document text
    • http://ctyr.ru/609771197386t6fi.pdfIn PDF document text
    • https://zuxidonav.weebly.com/uploads/1/3/4/8/134867872/jataga.pdfIn PDF document text
    • https://fumuzuwuwuwupu.weebly.com/uploads/1/3/0/9/130969925/kewuzovino.pdfIn PDF document text
    • https://sotogirepatobob.weebly.com/uploads/1/3/1/4/131453915/refeselusef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wojobawezelo.rf.gd/animated_cartoon_movies_mp4_free.pdfIn PDF document text
    • http://vufuxit.epizy.com/4949441736.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_off0000ec94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC94 5496 bytes
SHA-256: a9937dcc9e826d053de49da3ef8ed53d7d2eb7539bb139b92f0f3183969d8027
font_01_sfnt_off0000ff6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF6A 11320 bytes
SHA-256: 7ff8bc230875d6f9af46a64528f29415f65c486f25ec2457202cf904ed268b30

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