Malicious PDF — malware analysis report

Static analysis result for SHA-256 50d2f2b75ec8e0d1…

MALICIOUS

PDF

67.2 KB Created: 2021-02-19 06:40:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8a18d551f904e96cf8e05447dcc7ab09 SHA-1: d4cee9ab2a37997bbb5d63ff3f78610ec4940395 SHA-256: 50d2f2b75ec8e0d1ba44cf99eb565033c858509720a697316b8e67938fc557ea
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://bologen.ru/wix?keyword=things+that+begin+with+pop PDF link annotation
    • https://pemimitajeli.weebly.com/uploads/1/3/0/7/130739011/pibixadamirasagox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383925/normal_6029fb8174663.pdfIn PDF document text
    • https://vopesowe.weebly.com/uploads/1/3/4/6/134638419/3421673.pdfIn PDF document text
    • https://zogeliwev.weebly.com/uploads/1/3/4/3/134353139/d72909d393dba21.pdfIn PDF document text
    • https://buzufurabobozu.weebly.com/uploads/1/3/5/3/135304208/1a6a8a642.pdfIn PDF document text
    • http://hookup154.site/natizizerokunetadquio.pdfIn PDF document text
    • https://vopukuno.weebly.com/uploads/1/3/1/3/131383764/1971956.pdfIn PDF document text
    • http://logoped-samara.ru/my_golf_3dlrb2n.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481509/normal_5fecc278bc1a7.pdfIn PDF document text
    • https://davufafelasipip.weebly.com/uploads/1/3/4/3/134328138/faxujol_lulir_ronumuzubarulas.pdfIn PDF document text
    • http://securityofusersdevicesonline.site/vejuzopokedegipafeba71d8v.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419857/normal_60144eeab4d51.pdfIn PDF document text
    • https://jowatewiko.weebly.com/uploads/1/3/1/3/131380225/mifuwumeme_xuwad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000ca41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA41 5132 bytes
SHA-256: 4abd565db4b24a91eb4841062810e4c37ebff1b8940632a36d8e7b0b27bb5ce7
font_01_sfnt_off0000dbcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBCD 10896 bytes
SHA-256: c0ac39f4adfcd8b8b28d949783487dd43c34fc63f805ec3513e79dc57249b86a