Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ef68f7724f84666…

MALICIOUS

PDF

73.4 KB Created: 2021-02-28 05:51:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: edac6aa40a93a09c4f9b7c551c8a312f SHA-1: babc6edfc87275b8f0420a1c85009d58808e0ce0 SHA-256: 9ef68f7724f84666782683273674d36e28119877f266f084de2d974a2883856c
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/award?keyword=2006+infiniti+g35+automatic+transmission+oil+change PDF link annotation
    • https://cdn.sqhk.co/xubuzivo/hb9ih71/zilabiruxaxufuw.pdfIn PDF document text
    • http://antonioita.fun/niratiwegfh95.pdfIn PDF document text
    • http://xamoxipuwizutux.scienceontheweb.net/38494160612.pdfIn PDF document text
    • https://cdn.sqhk.co/tevunufoba/hdr8ggN/fimesu.pdfIn PDF document text
    • http://auth02mobility.com/deliwotexouwhua.pdfIn PDF document text
    • https://cdn.sqhk.co/seworani/ihxgdhi/saudi_arabia_champions_cup_soccerway.pdfIn PDF document text
    • https://baxufolodamiz.weebly.com/uploads/1/3/1/4/131408032/veramisukuvegasinur.pdfIn PDF document text
    • https://girusidopot.weebly.com/uploads/1/3/0/7/130738876/1625637.pdfIn PDF document text
    • https://cdn.sqhk.co/wuwexosul/Y7Khija/zepogidunux.pdfIn PDF document text
    • https://cdn.sqhk.co/joremeve/hYidijI/66953387707.pdfIn PDF document text
    • http://nikaold.site/jurelomuxisataxumid959or.pdfIn PDF document text
    • https://tipuxefisabe.weebly.com/uploads/1/3/4/8/134846761/relofutab_jonujok.pdfIn PDF document text
    • http://twoup-viktoria.online/kirogajevefitowokuzudutudn2wk.pdfIn PDF document text
    • https://kopusinuzek.weebly.com/uploads/1/3/4/1/134131929/9613869.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rususekobijo.myartsonline.com/subuto.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_off0000e18d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE18D 5916 bytes
SHA-256: 06f29720e8e37defb30c2a9ee643ee656cf0a9e1e7bfc090d2f45345bb2a6887
font_01_sfnt_off0000f590.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF590 10248 bytes
SHA-256: 23d917f9125b32af98087914c50173487ec339e03c680b6339838861b892a8cd