Malicious PDF — malware analysis report

Static analysis result for SHA-256 49cbca8864700f84…

MALICIOUS

PDF

80.7 KB Created: 2021-02-21 05:02:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c5fd2d000090716ce2c2b90c3376e6cf SHA-1: 8d31f337ba711440a9e22959e548475808a09e89 SHA-256: 49cbca8864700f84f80f90bc305c6d2b8872b426c54521511ac53fdd0c68f3f5
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/123?utm_term=onkyo+tx-nr515+av+receiver+%25282012+model%2529 PDF link annotation
    • https://ralifanexipoker.weebly.com/uploads/1/3/1/3/131380500/3076252d2faa6.pdfIn PDF document text
    • https://cdn.sqhk.co/jobiwokojo/jfZjdcx/billion_builders_mod_apk_5play.pdfIn PDF document text
    • https://zaxalaxixu.weebly.com/uploads/1/3/1/6/131606365/vugawovubavifajo.pdfIn PDF document text
    • https://cdn.sqhk.co/sifajoxojif/igOSKic/football_career_mode_games.pdfIn PDF document text
    • https://cdn.sqhk.co/defisepeniba/cFjbGgf/car_stunts_3d_hack_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/gegefemorosu/Hhbihgj/56716345916.pdfIn PDF document text
    • https://teduruperalugo.weebly.com/uploads/1/3/4/3/134320262/2bebee9bd.pdfIn PDF document text
    • http://esportzmlevent.com/20439314584li1ty.pdfIn PDF document text
    • https://rubusabulolow.weebly.com/uploads/1/3/5/3/135326577/9e4a3.pdfIn PDF document text
    • http://prostotit.site/t-_mobile_tech_experiencevbe7r.pdfIn PDF document text
    • https://cdn.sqhk.co/zutijujes/IKwicyV/85452596195.pdfIn PDF document text
    • https://cdn.sqhk.co/feneradebeza/1L8ljeY/skin_girl_roblox.pdfIn PDF document text
    • https://cdn.sqhk.co/businaxidare/hbehbha/ice_cream_truck_for_sale_craigslist_nj.pdfIn PDF document text
    • http://myimperfectmomlife.com/athlean_x_90_day_program_free7jn57.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/potamotaz/zutidaludexomanijur.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_off0000fab4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAB4 5864 bytes
SHA-256: 7d06aba376d76789a93375bf92a3e6858eb0ce2c3b5f55a0389d7c510cfb3c93
font_01_sfnt_off00010ecd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ECD 11920 bytes
SHA-256: beae413af39cf93833803a4d3a53293513f729b248fe07b8ce0b480a9255cd95