Malicious PDF — malware analysis report

Static analysis result for SHA-256 0161daee68c83bba…

MALICIOUS

PDF

104.2 KB Created: 2021-03-06 04:16:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6b0f51134ce4b335ec6878004b8f404d SHA-1: fe68e968715822575878f959898128393e2ba917 SHA-256: 0161daee68c83bba4d231ad6bf35161c6d03d1dd56e25f1175cfba2f033762d7
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://resalured.ru/wix?keyword=linear+regression+model+sklearn PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4479688/normal_600b4e79f1868.pdfIn PDF document text
    • http://digosige.mywebcommunity.org/circuito_amplificador_de_audio.pdfIn PDF document text
    • https://cdn.sqhk.co/fegokirar/8igjfje/head_soccer_championship_2020.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481289/normal_5fe5a47738f7d.pdfIn PDF document text
    • https://cdn.sqhk.co/jujejorule/6GggCo1/spain_football_team_wallpaper_hd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378167/normal_601c85cb360dc.pdfIn PDF document text
    • https://cdn.sqhk.co/minederepa/dNieHIG/slicer_cut_finger.pdfIn PDF document text
    • http://vovodofozufora.iblogger.org/dumet.pdfIn PDF document text
    • https://cdn.sqhk.co/dokukavifig/bQZxqTa/4412548177.pdfIn PDF document text
    • https://cdn.sqhk.co/jowapezo/0F1MUxk/boy_skins_for_minecraft_java.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/nuxomigo/homers_iliad_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/dudurat/lagu_terdiam_sepi_koplo_version.pdfIn PDF document text
    • https://s3.amazonaws.com/kitakilesa/boston_scientific_latitude_6280_manual.pdfIn PDF document text
    • http://jinixoxugud.rf.gd/afk_arena_estrilda_guide.pdfIn PDF document text
    • http://dakafatuvuguviz.atwebpages.com/xixafaxofegutajoseros.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/mevuwojod.pdfIn PDF document text
    • https://s3.amazonaws.com/lonozote/tisiradepexuposaw.pdfIn PDF document text
    • https://s3.amazonaws.com/tidigudetefumof/ajax_request_format_json.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_off000155b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x155B8 5152 bytes
SHA-256: 231a62853c3881da212f04ecb68b1cea006df75183915f581a64066d8703c836
font_01_sfnt_off0001672b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1672B 13824 bytes
SHA-256: 1b087f90cc1374dfa070eab982b18d379506f805459907c745e24c6646d444bd