Malicious PDF — malware analysis report

Static analysis result for SHA-256 a46632f1df35ff2b…

MALICIOUS

PDF

70.0 KB Created: 2021-02-07 19:31:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 33684e79f8ef41a404996b362fabfa52 SHA-1: 962692e2758a5ab691b6f8918d43e2fd9bafb154 SHA-256: a46632f1df35ff2bc443f724a30be7ecbd622b5a2acb2b7fcf26bd3d69dc3f5e
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://jottigo.ru/wb?keyword=acca%20f3%20revision%20kit%20pdf%202018 PDF link annotation
    • https://cdn.sqhk.co/zofagopipowi/gjFicjI/33486216308.pdfIn PDF document text
    • https://voduzivet.weebly.com/uploads/1/3/1/6/131607522/nixibape-mogavuxaloxef-puwum-togepogizaf.pdfIn PDF document text
    • http://national-verifyteam.com/16426967846cds7r.pdfIn PDF document text
    • https://vibitaxipeni.weebly.com/uploads/1/3/4/5/134526550/milajolol.pdfIn PDF document text
    • http://siankaanmexico.com/violin_sight_reading_grade_40ysc3.pdfIn PDF document text
    • https://mavezuwunokil.weebly.com/uploads/1/3/4/6/134627141/dusopusixanub.pdfIn PDF document text
    • https://wewiruvikaju.weebly.com/uploads/1/3/0/7/130775929/4416047.pdfIn PDF document text
    • https://litudawugo.weebly.com/uploads/1/3/3/9/133997631/baras_dukin.pdfIn PDF document text
    • http://azalea.store/dosigixamagarime7ozj0.pdfIn PDF document text
    • https://cdn.sqhk.co/fejavegiwo/E4hbAjf/pubuxapisusunuxuxasubipo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jipinasin.epizy.com/rulafotifarezodakukar.pdfIn PDF document text
    • http://juzelipa.rf.gd/tda2030_audio_amplifier_circuit_diagram.pdfIn PDF document text
    • http://najaxobefirag.epizy.com/chsl_2019_form_fee.pdfIn PDF document text
    • http://lozisuvuxinosog.epizy.com/kijoxipaterojilivusive.pdfIn PDF document text
    • http://kasisexa.rf.gd/radial_engine_assembly_drawing.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_off0000d24e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD24E 5916 bytes
SHA-256: 4d3f0e698291b1221478b4a0cab2270dec798d3b07d8b4b00148a25ef19f8c48
font_01_sfnt_off0000e695.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE695 10848 bytes
SHA-256: 9a4eb342e66f73dbb7a399f12a50db37868a1286aa25055980209233e801c3ce