Malicious PDF — malware analysis report

Static analysis result for SHA-256 342c366545bdd2d6…

MALICIOUS

PDF

67.7 KB Created: 2021-02-24 13:41:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0373e06858a2df66089b3104d2da4b5b SHA-1: 12457c7228b467fe501508ee2d800a95e039db20 SHA-256: 342c366545bdd2d62c43f4ed68f0bb81e94122aa27b514504b596d233b255f1e
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wb?keyword=washington%20state%20lottery%20winners%20anonymous In PDF document text
    • https://static.s123-cdn-static.com/uploads/4421764/normal_5ff71342266ea.pdfIn PDF document text
    • https://jubiporosevuzu.weebly.com/uploads/1/3/2/6/132695682/bixobalabeva-nefonas-jabubag-rajajom.pdfIn PDF document text
    • https://tobemokopa.weebly.com/uploads/1/3/0/7/130776516/addc5962c0.pdfIn PDF document text
    • http://naziniza.22web.org/glioblastoma_multiforme_treatment_with_poliovirus.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414161/normal_5fecfb1851d6c.pdfIn PDF document text
    • http://shoop-fm.ru/asustor_as1002thbd4h.pdfIn PDF document text
    • http://ouily.xyz/27952131787eo8u6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388157/normal_5fd7ed5a27c01.pdfIn PDF document text
    • https://bejetatibuket.weebly.com/uploads/1/3/5/9/135957672/mumux_xepotano_vibamazafidof.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493597/normal_5ff76faca4fa8.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/kudufigunabi/complex_wavelet_transform_image_matlab.pdfIn PDF document text
    • http://tujefozumuresul.epizy.com/augustine_theology.pdfIn PDF document text
    • http://nunelaxe.epizy.com/pinal_county_trash_pickup.pdfIn PDF document text
    • https://s3.amazonaws.com/wuwabobujasivor/mijozogolasesife.pdfIn PDF document text
    • https://s3.amazonaws.com/taguxif/pirawewowujug.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_off0000cc13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC13 5304 bytes
SHA-256: 4cf96d3fd8b8b7bb84a25756b62ca504bbee17b1817e2d67090f60b620c54622
font_01_sfnt_off0000de14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE14 10456 bytes
SHA-256: 9ec9cedb1b2c1377c835d6f89cfafa41ecd5d29d9ad75a899dcb847f9de03aff