Malicious PDF — malware analysis report

Static analysis result for SHA-256 4153f9e4c8aee107…

MALICIOUS

PDF

69.6 KB Created: 2021-03-02 12:42:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7c681d4889edc48aaacabddafb010af2 SHA-1: 83b2bcb9d91815ff13bfaa4282b2c36a1abc13e0 SHA-256: 4153f9e4c8aee1078dd783d7d267dfa96b3eb78e096d3024bfd2d8a63189fc30
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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/award?keyword=ge+true+temp+oven+heating+element PDF link annotation
    • https://tezefidusipenu.weebly.com/uploads/1/3/1/8/131857758/levijonanojuwi.pdfIn PDF document text
    • http://usacreditcheck.info/word_games_for_9th_gradersdnslk.pdfIn PDF document text
    • http://moshon.space/49811118300vypwf.pdfIn PDF document text
    • https://lopifonexebifi.weebly.com/uploads/1/3/5/9/135986218/korogedogifekorage.pdfIn PDF document text
    • https://jufavufopu.weebly.com/uploads/1/3/4/3/134340263/5714829.pdfIn PDF document text
    • https://kowirakixodoxe.weebly.com/uploads/1/3/4/4/134467502/5795347.pdfIn PDF document text
    • https://dinidoleto.weebly.com/uploads/1/3/0/9/130969871/5139505.pdfIn PDF document text
    • https://safasisi.weebly.com/uploads/1/3/4/4/134472516/nobimoto.pdfIn PDF document text
    • http://betmoy57.com/cules_son_los_frutos_del_espritu_santo_segn_la_bibliagktiw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380229/normal_603dcd671086e.pdfIn PDF document text
    • https://megewesaj.weebly.com/uploads/1/3/0/7/130738707/cdb831be5aa0e.pdfIn PDF document text
    • https://juzudibat.weebly.com/uploads/1/3/4/3/134328144/fewodumoleju.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374024/normal_60399e36b980f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428045/normal_5fd78fbb54bd8.pdfIn PDF document text
    • https://tixanesel.weebly.com/uploads/1/3/4/2/134234664/nuripevumutuzelozul.pdfIn PDF document text
    • http://hdsamara.ru/algebraic_fractions_adding_and_subtracting_worksheets6bxo7.pdfIn PDF document text
    • https://pixumoxijabana.weebly.com/uploads/1/3/4/7/134748481/8982153.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/wazorixekunafob/barney_and_friends_four_seasons_day.pdfIn PDF document text
    • https://s3.amazonaws.com/wamatasamegu/40998224086.pdfIn PDF document text
    • https://s3.amazonaws.com/kavifunaruvi/chudi_jo_khanke_new_version_ringtone.pdfIn PDF document text
    • https://s3.amazonaws.com/tutasujal/alexis_carrel_man_the_unknown.pdfIn PDF document text
    • https://s3.amazonaws.com/voropa/kazivo.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_off0000d47a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD47A 5148 bytes
SHA-256: 8a54b5b0ad9b7bba38a95c42c4469c8559da6a698ea9d966010899722e7e4c11
font_01_sfnt_off0000e5d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5D6 10540 bytes
SHA-256: d4d40868fa52afa190ec81daa870e217a3964d536ee415bce9e645a2c6fdcdb7

Open this report in the interactive analyzer, or submit your own file for analysis.