Malicious PDF — malware analysis report

Static analysis result for SHA-256 c08fdc011f956480…

MALICIOUS

PDF

67.8 KB Created: 2021-03-03 15:09:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 83abfde4c96257d5e2a7379be2517c79 SHA-1: 6e354a098214b10646a5c647a9ada95cf76a6449 SHA-256: c08fdc011f9564802bb3783aaa1f336cdd9b9c4dff2c0f92bd39e76a68656ba8
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://jacksth.ru/award?keyword=jandy+lxi+heater+ignition+lockout PDF link annotation
    • https://goxesepejapumew.weebly.com/uploads/1/3/4/6/134609979/16e203d57412.pdfIn PDF document text
    • https://cdn.sqhk.co/jopubelo/RJu2lib/63997317189.pdfIn PDF document text
    • https://cdn.sqhk.co/vakusukereju/ibhjihj/service_company_income_statement_expenses.pdfIn PDF document text
    • https://bevevigulamop.weebly.com/uploads/1/3/4/7/134759368/898406.pdfIn PDF document text
    • https://cdn.sqhk.co/xexisini/jbDjd4H/marshmello_songs_list.pdfIn PDF document text
    • http://xovuwowim.mypressonline.com/does_lowes_sell_dewalt_tools.pdfIn PDF document text
    • https://cdn.sqhk.co/zenekukera/tlib4hj/92480846093.pdfIn PDF document text
    • https://cdn.sqhk.co/kupuruvew/idibggZ/79981519078.pdfIn PDF document text
    • https://xevowuzari.weebly.com/uploads/1/3/1/4/131437308/689373.pdfIn PDF document text
    • https://jikevisanudopud.weebly.com/uploads/1/3/4/0/134017539/fc6305d1ae46b.pdfIn PDF document text
    • https://nukofagola.weebly.com/uploads/1/3/4/8/134883999/4000ad35a.pdfIn PDF document text
    • https://cdn.sqhk.co/mowasikuso/gj7qwgS/boxemaf.pdfIn PDF document text
    • https://cdn.sqhk.co/vumajotiwog/HhjUhib/85686863177.pdfIn PDF document text
    • http://diluzadumavotux.getenjoyment.net/michigan_child_support_address_change.pdfIn PDF document text
    • http://poxumanavofeboz.scienceontheweb.net/dyson_cinetic_big_ball_animal_vacuum_assembly.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://duziroro.myartsonline.com/paul_dawkins_notes_integral_calculus.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_off0000cdad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDAD 5248 bytes
SHA-256: fc5fec9506f99c7ffcc01dadb0876efef639970768be1e1220bed3dd343fc259
font_01_sfnt_off0000df8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF8A 10128 bytes
SHA-256: 8456fdc4c7ff826808d7b252968fa2fc40f888ef0dfd44d4c0b0dc4556b3ac98