Malicious PDF — malware analysis report

Static analysis result for SHA-256 382346ae3e3a6836…

MALICIOUS

PDF

70.9 KB Created: 2021-02-16 09:49:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e8b6875f1374e46cec8a438393ee8165 SHA-1: 9483c86475ffd3a2face5c28d76dd8ec36677d24 SHA-256: 382346ae3e3a6836510a790dee3f518912d5337c10f1f655d3021f06e9deb818
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/wix?keyword=2020+irs+income+tax+brackets PDF link annotation
    • https://xewidepomizexas.weebly.com/uploads/1/3/0/7/130775014/kuzizamafawon-wepidok.pdfIn PDF document text
    • https://vezutokabev.weebly.com/uploads/1/3/4/7/134758566/jovosodotimoloteger.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460473/normal_5ffbc007479c0.pdfIn PDF document text
    • https://febamepu.weebly.com/uploads/1/3/1/0/131070604/mimijawasukumapop.pdfIn PDF document text
    • https://kowedeta.weebly.com/uploads/1/3/0/7/130775164/dofok-rulipu-funukikimexi.pdfIn PDF document text
    • https://cdn.sqhk.co/tedalome/iahho2s/instagram_app_logout.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480387/normal_5fd2c974f3be3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465252/normal_5fdf1c034b97f.pdfIn PDF document text
    • https://faturigazed.weebly.com/uploads/1/3/4/8/134859690/poxitilujamewe-xepetagokebured-kizivomet-kaguke.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/nonabafat/dubuzusof.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/mutual_non_disclosure_agreement_template.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/71717038485.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_off0000d8b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8B9 5364 bytes
SHA-256: ec2573115dc7dfb6e3c203188cffecb49629c8e55cad46003de0309de97fd272
font_01_sfnt_off0000eade.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEADE 10692 bytes
SHA-256: 0872730c03b2b151a3b38413e8aaf9b46d939c08fea8af842b6f8e0a1366d895