Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f898a7a9bc63345…

MALICIOUS

PDF

70.5 KB Created: 2021-02-20 21:23:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 429fa177a5f39cd112921f06d81467e8 SHA-1: 80cded26495be27795057afc07de083454f99814 SHA-256: 5f898a7a9bc63345b62c6ce21858b5ac2b76d4ce820ca1ffe57c66452676762a
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://leonvi.ru/wix?keyword=2020+form+1040+schedule+c PDF link annotation
    • https://tutusilubejisev.weebly.com/uploads/1/3/4/5/134599447/480834.pdfIn PDF document text
    • https://xikewewojan.weebly.com/uploads/1/3/4/0/134095915/pojakug.pdfIn PDF document text
    • http://vewedomodisex.22web.org/retail_business_budget_template_excel.pdfIn PDF document text
    • http://kovezemunoropu.iblogger.org/49611638675.pdfIn PDF document text
    • https://pebezudaxefen.weebly.com/uploads/1/3/4/3/134347708/gilujetokol.pdfIn PDF document text
    • https://sowuritujozefa.weebly.com/uploads/1/3/4/6/134621612/d0f94.pdfIn PDF document text
    • https://gogovujogizog.weebly.com/uploads/1/3/1/6/131607278/tusurozijodowen_gavuveb.pdfIn PDF document text
    • https://velawavasikene.weebly.com/uploads/1/3/5/4/135400921/3453f001be.pdfIn PDF document text
    • https://zorisurirumu.weebly.com/uploads/1/3/4/6/134600588/ba8f4768f126.pdfIn PDF document text
    • http://busotokebos.iblogger.org/15371385775.pdfIn PDF document text
    • https://bobusenig.weebly.com/uploads/1/3/4/8/134866704/0bac8cf468.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xatonidolib.epizy.com/nepaka.pdfIn PDF document text
    • http://giduzorim.epizy.com/eliciting_information_from_multiple_experts.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/socio-cultural_environment_meaning.pdfIn PDF document text
    • http://namutogenasokab.epizy.com/dante_s_inferno_ps3_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tikoweravisixu/gophish_email_templates_github.pdfIn PDF document text
    • https://s3.amazonaws.com/pidufozu/authenticator_app_fortnite.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_off0000d879.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD879 5368 bytes
SHA-256: ba791ca80edf265c523cf2de6f5b362f59d9dfcc077b91077d3705a6c9647b7f
font_01_sfnt_off0000ea9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA9F 10172 bytes
SHA-256: ce3838b96b4e42c561df4567d6312965bbc2e3878affa9998732e95340e96fbb