Malicious PDF — malware analysis report

Static analysis result for SHA-256 17efea02f1c6c6f3…

MALICIOUS

PDF

73.1 KB Created: 2021-03-03 09:28:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 32613eed90c4a243782454ab3aa5fb25 SHA-1: 4722a6a13df05d224627da20132539bf2790c1c9 SHA-256: 17efea02f1c6c6f3b505609542de2328bcc1af18d82919de425bf114ee689cd5
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://fokemale.ru/wix?keyword=add+subtract+multiply+and+divide+integers+worksheet+pdf PDF link annotation
    • http://persequenteamsohbet.com/nivuvuwatamivoxo4wvt.pdfIn PDF document text
    • http://presentinsta.site/97686144481kn30a.pdfIn PDF document text
    • https://jadamoxor.weebly.com/uploads/1/3/5/3/135344742/7185215.pdfIn PDF document text
    • https://josuwolirekovu.weebly.com/uploads/1/3/4/3/134305593/zuwonuk-vupomuwoxibaj.pdfIn PDF document text
    • https://cdn.sqhk.co/xibidodoko/gjvQ7gi/car_crash_last_night_nyc.pdfIn PDF document text
    • https://xizenarinirogav.weebly.com/uploads/1/3/1/4/131437147/d12b64f6817.pdfIn PDF document text
    • http://regse.website/lesson_plan_template_for_1st_gradeyl0mo.pdfIn PDF document text
    • http://itclick.pro/human_body_systems_webquest_answer_k7iflx.pdfIn PDF document text
    • https://cdn.sqhk.co/xejadukoxeta/ghfghcL/37154119471.pdfIn PDF document text
    • https://bizitodavil.weebly.com/uploads/1/3/4/3/134321392/wivak_zanumujijusete_xizeg_zitekajomuvi.pdfIn PDF document text
    • http://sesumuruvo.22web.org/satogorepobuxetesumu.pdfIn PDF document text
    • https://mutabezikubi.weebly.com/uploads/1/3/4/7/134739743/af041d569acfa.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/jejulurowev/telimu.pdfIn PDF document text
    • http://rejoxudirux.epizy.com/matematica_financiera_ejercicios_resueltos_de_interes_simple.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_off0000dcce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCCE 6016 bytes
SHA-256: 5a7766943e3f3dd5e0df15c53c2889ba26853c1ac7122ba478286750a1280ddd
font_01_sfnt_off0000f13d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF13D 10480 bytes
SHA-256: 1c9bae42e4f6b5425095789218a7a1fca124879b52b13a4069dd1b844da650eb