Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f2b5e2b4b541ec9…

MALICIOUS

PDF

71.3 KB Created: 2021-02-13 02:38:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b3fbdc85b2ef76b06021fbf677c87b90 SHA-1: 55b92eef3f5f099d0d233b0216dabb10ced36ce0 SHA-256: 3f2b5e2b4b541ec9a6a8423ee19c608fbaed87da4d676105f8ed1ba2e67fa8f6
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://baarspo.ru/wix?keyword=becoming+aware+13th+edition+ebook PDF link annotation
    • http://reform-st.ru/alcatel_lucent_ip_touch_4029_manual_portuguesqlwb9.pdfIn PDF document text
    • http://reduslimitaly.website/tosisawukiguvire3zeyx.pdfIn PDF document text
    • https://sikufotoxatufik.weebly.com/uploads/1/3/4/4/134458503/xipabivivubukewuj.pdfIn PDF document text
    • https://musuvawe.weebly.com/uploads/1/3/4/5/134528527/5601389.pdfIn PDF document text
    • https://lamuwopinu.weebly.com/uploads/1/3/4/6/134632291/1fd6da13df103.pdfIn PDF document text
    • https://referozudu.weebly.com/uploads/1/3/0/7/130775612/3c6654d.pdfIn PDF document text
    • https://toralalog.weebly.com/uploads/1/3/1/4/131436966/lisuvuzulezen_gitugisuzigoja.pdfIn PDF document text
    • http://fullhp.info/aashto_lrfd_bridge_design_specifications_8th_edition970kk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426558/normal_5ff061c6c6325.pdfIn PDF document text
    • http://discount50it.pro/mean_value_theorem_calculus_worksheet93jax.pdfIn PDF document text
    • http://flowerport.shop/518303850656j9fm.pdfIn PDF document text
    • https://gaxurorilapuw.weebly.com/uploads/1/3/2/3/132302857/gumebexunuf_muzofosi.pdfIn PDF document text
    • https://faxarumi.weebly.com/uploads/1/3/1/6/131606834/newuzegibojetajejita.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rarejis.epizy.com/75404067137.pdfIn PDF document text
    • http://bexinoj.epizy.com/car_payment_statement_template.pdfIn PDF document text
    • http://jedajokojar.epizy.com/stranded_deep_latest_version_2018.pdfIn PDF document text
    • http://pagovogezafub.rf.gd/zubawutiko.pdfIn PDF document text
    • https://s3.amazonaws.com/bexolamabad/simenepin.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_off0000da1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA1B 5704 bytes
SHA-256: 77860ee7772fb5040e7d4e7a2448b0d4a24895a6cdc3d228e9114b1109f05cd5
font_01_sfnt_off0000ed6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED6C 10184 bytes
SHA-256: 6cb7fa74b7446b513bdadd243fbbb9f1023fd9f65e05b8c1959dba15f5bb26e6