Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c9d2583d6b21589…

MALICIOUS

PDF

66.8 KB Created: 2021-02-22 19:57:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: b31d8aebf1f28d75f6da913920bc0ac2 SHA-1: b919618ab8345330da5246c6a14ec38e0a5984f8 SHA-256: 6c9d2583d6b21589f23b5ae26a4d60db0ea64bffc7574623654a9070649322e2
146 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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://baarspo.ru/wix?keyword=america+vs+quindio PDF link annotation
    • http://fc-aromat.ru/itil_v3_processesac0k9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384307/normal_5fcb76302f465.pdfIn PDF document text
    • http://mozodulo.iblogger.org/97772833886.pdfIn PDF document text
    • http://1pokypki.website/8063882989605uwa.pdfIn PDF document text
    • http://ellmax-site.xyz/zilekunalazefilokiwotiha6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446761/normal_5ffcd74fac529.pdfIn PDF document text
    • http://help-service-support.com/88186283918cvhh.pdfIn PDF document text
    • https://wexetapita.weebly.com/uploads/1/3/4/3/134307875/edc74b6ace7.pdfIn PDF document text
    • http://fusifasuroxeso.22web.org/jafapiximirud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370740/normal_6021824c97e68.pdfIn PDF document text
    • https://jowujutaxafekul.weebly.com/uploads/1/3/5/3/135348014/6a700aa6a6712b.pdfIn PDF document text
    • https://vidijizuv.weebly.com/uploads/1/3/0/7/130776341/pemage.pdfIn PDF document text
    • https://forupiwiwipugo.weebly.com/uploads/1/3/5/3/135349306/wogox-nuxipuvemaj.pdfIn PDF document text
    • http://bufo.online/rirujim7wy.pdfIn PDF document text
    • http://microbladingeyebrowsdallastx.com/74136949074y69r4.pdfIn PDF document text
    • http://bonus332.site/tesco_questionnaire_answers_crumpets03z2n.pdfIn PDF document text
    • http://rameautbxy.space/javuxuzefolixiq277c.pdfIn PDF document text
    • http://sebaxupakokak.22web.org/chuyn_t_file_nh_sang.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368503/normal_5fe7156518804.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465392/normal_5fd65b8f454a3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dubekitaxa.epizy.com/gadisasonupe.pdfIn PDF document text
    • http://puzexexaniledow.epizy.com/83732246380.pdfIn PDF document text
    • http://vetanafajodomek.epizy.com/baixar_jogos_android_apk.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_off0000c830.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC830 5228 bytes
SHA-256: a274a350538b9e3b3023fe032295d3332c82e55956e77a1855a883d70bc2cb38
font_01_sfnt_off0000d9e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9E4 10844 bytes
SHA-256: ff995d1ee2514d49a5388581b2827cb3100308f23b45ed0e30d910afef29cd08

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