Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3848e53dab35e19…

MALICIOUS

PDF

73.7 KB Created: 2021-02-25 17:34:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 8439760b65ed10404ec4052c901ee253 SHA-1: 419abb45b24524f2afc1437885d67f80e80fb161 SHA-256: d3848e53dab35e19c27679af03b890b86879d1075461942bf7aff64ce7c4499e
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://maypoin.ru/award?keyword=how+much+does+it+cost+to+fix+advancetrac PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4387921/normal_5fcdfe7632664.pdfIn PDF document text
    • http://moresukko.ru/toyota_auris_2016_radio_manualwfisw.pdfIn PDF document text
    • https://sufotope.weebly.com/uploads/1/3/0/7/130775917/3747321.pdfIn PDF document text
    • https://vojizozovogimum.weebly.com/uploads/1/3/0/7/130740342/398330.pdfIn PDF document text
    • http://rabota-plus.club/joxefiv40ha.pdfIn PDF document text
    • http://everydays.space/digital_marketing_company_new_yorksd52c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403685/normal_5fce4dccba88f.pdfIn PDF document text
    • https://cdn.sqhk.co/jutusaxibu/heHjjfe/colors_that_go_together_with_sky_blue.pdfIn PDF document text
    • https://cdn.sqhk.co/bofagenined/bhijKHJ/disorderly_conduct_ohio_board_of_nursing.pdfIn PDF document text
    • https://gewipilozu.weebly.com/uploads/1/3/0/7/130775211/punar_lafirux_lasepiw_judefu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488090/normal_600b7894d4a9b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489975/normal_5fc91609be395.pdfIn PDF document text
    • https://gavititexufo.weebly.com/uploads/1/3/3/9/133997787/5930182.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/vidadaviwal/sony_str_dn840_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/sevavopifujujano.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_off0000e50c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE50C 5408 bytes
SHA-256: 74618e0ff935d9dc5ce0b1b5e8645b0dcdcd65f3a1c176b7f69b2edd454259a6
font_01_sfnt_off0000f762.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF762 10132 bytes
SHA-256: 1128ad9da4df58f3cb2546d7ce625fbeaa48ea10fb669b20f0e8220c9ce5f1de