Malicious PDF — malware analysis report

Static analysis result for SHA-256 e448445ab3b6f640…

MALICIOUS

PDF

71.8 KB Created: 2021-02-12 04:50:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 37ac4ff9ac7726bf328475a5b181c529 SHA-1: 80a7d4ac73ec6837e651bbc72b0a9ed85eb95c54 SHA-256: e448445ab3b6f640f61369233c279ae4ff2bff0e01f5196cb0f23323124613a5
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/wix?keyword=fugoo+tough+speaker+manual PDF link annotation
    • https://cdn.sqhk.co/dutararopat/ghmpKih/bear_archery_recurve_bow_case.pdfIn PDF document text
    • https://cdn.sqhk.co/tajiwikiter/19hjhbW/totafe.pdfIn PDF document text
    • https://lefusovu.weebly.com/uploads/1/3/4/0/134040443/finekoj.pdfIn PDF document text
    • https://cdn.sqhk.co/vipikunowi/jg4ii4p/slither_2_movie_trailer.pdfIn PDF document text
    • https://cdn.sqhk.co/nerenina/icheXjh/52269592800.pdfIn PDF document text
    • https://tazabojadikeze.weebly.com/uploads/1/3/4/6/134648043/9827095.pdfIn PDF document text
    • https://jevogebog.weebly.com/uploads/1/3/2/3/132303093/69b9ae28fdb935e.pdfIn PDF document text
    • https://kunotokadi.weebly.com/uploads/1/3/1/3/131379116/zapupibebagupafigosi.pdfIn PDF document text
    • https://cdn.sqhk.co/pijovowifil/eiwNunM/xukelilabilogitenidar.pdfIn PDF document text
    • https://senorori.weebly.com/uploads/1/3/4/6/134641151/9720387.pdfIn PDF document text
    • https://cdn.sqhk.co/surodamiz/wiiBic7/fios_tv_channel_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/siloneza/mriEgg5/73384103590.pdfIn PDF document text
    • https://nipobajomofak.weebly.com/uploads/1/3/4/6/134641158/037e547bb966e.pdfIn PDF document text
    • https://nijuvijoz.weebly.com/uploads/1/3/1/4/131408832/3080851.pdfIn PDF document text
    • https://getaforufuzok.weebly.com/uploads/1/3/4/7/134733873/6865707.pdfIn PDF document text
    • https://cdn.sqhk.co/rupomotiz/DUOfjhz/levujamupejowumilereloju.pdfIn PDF document text
    • https://wepebajaka.weebly.com/uploads/1/3/4/5/134588919/01ce0.pdfIn PDF document text
    • https://cdn.sqhk.co/kisunika/Woibwoq/fare_gli_stickers_su_whatsapp.pdfIn PDF document text
    • https://fwcdn.pl/fpo/95/86In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/resixexi/74411386516.pdfIn PDF document text
    • https://s3.amazonaws.com/pasutiz/building_construction_technology_notes.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_off0000dca6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCA6 5252 bytes
SHA-256: 4b3e4eae0503a8383072a0c2c8f4c8d5fa94f8791148c6a1c442a6fae83d36dd
font_01_sfnt_off0000ee61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE61 10508 bytes
SHA-256: ac2cf8bcaa94e7611a2af2a3cc57b25adad688bc3a4faa47f6a0c4d97e7793e5

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