Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa73cc5351b9e833…

MALICIOUS

PDF

72.7 KB Created: 2021-02-18 20:01:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d69df32bdca3502d741d67e6d08af3e2 SHA-1: 2ee9dc961fe5330ba3ce1bfce521acade5467094 SHA-256: fa73cc5351b9e83321e45b7e87020424c10e1de39d2ba0dc477dad32f808e5a2
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://maypoin.ru/123?utm_term=peak+secrets+from+the+new+science+of+expertise+kindle PDF link annotation
    • https://cdn.sqhk.co/bijowiroma/ggcy6if/69078080625.pdfIn PDF document text
    • https://xefulexemifin.weebly.com/uploads/1/3/1/3/131398452/tulavareduwoxoko.pdfIn PDF document text
    • https://ledosixekesi.weebly.com/uploads/1/3/4/3/134313849/c0902b6a4d09ec.pdfIn PDF document text
    • https://cdn.sqhk.co/lenawemijixe/9hijhaR/the_tiger_rising_full_text.pdfIn PDF document text
    • https://leloturopuroka.weebly.com/uploads/1/3/5/9/135956930/nodotepiliw.pdfIn PDF document text
    • http://dress-russia.ru/94548493588uoto7.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwasokeg/idfihha/4_pics_1_word_level_1828_answer.pdfIn PDF document text
    • https://cdn.sqhk.co/dukoredod/icKFChf/tomb_of_the_mask_color_level_49.pdfIn PDF document text
    • https://cdn.sqhk.co/jedesawu/aihpjfH/cursos_en_linea_gratis_de_negocios_internacionales.pdfIn PDF document text
    • http://rekusigixebisuk.22web.org/dosisofizigobi.pdfIn PDF document text
    • https://waxutawuvesi.weebly.com/uploads/1/3/1/4/131455398/welamuv-ziwijuru-tevewitafa.pdfIn PDF document text
    • https://timelasabo.weebly.com/uploads/1/3/4/3/134345700/mikejet.pdfIn PDF document text
    • https://cdn.sqhk.co/mofijovelu/8xqgphb/little_heroes_3_2002_full_movie.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://milifarininigo.rf.gd/nuxemoloreruv.pdfIn PDF document text
    • http://jipowefata.epizy.com/lokepubeveludakozaful.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_off0000dd00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD00 5620 bytes
SHA-256: f8151cff64237d6dc36b8030d2e137b0fb6455743cb1e6f0aa476d73d43fc7cf
font_01_sfnt_off0000f00d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF00D 11072 bytes
SHA-256: 5a4ab1a328d9b7d5477d1d2307787886438616f5b97d6789287219485aad6fcb