Malicious PDF — malware analysis report

Static analysis result for SHA-256 3de0cd0bfa6074a3…

MALICIOUS

PDF

79.5 KB Created: 2021-02-28 18:48:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 71cfa25e906cb8060e53b73b3bf3de72 SHA-1: 61dc9bdcd5adc6d5acdd6a2d386bb48c1b814fcb SHA-256: 3de0cd0bfa6074a378207139f16fc637464c0f9f30fcffec840a8a41e6b7f49e
196 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.
  • 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://soxebez.ru/award?keyword=why+does+my+soundbar+have+a+delay PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4471959/normal_603685ac3a133.pdfIn PDF document text
    • http://pomirkapa.site/exercicios_sistema_excretor_8_anoo23vw.pdfIn PDF document text
    • https://bozaxemavokasum.weebly.com/uploads/1/3/1/3/131383719/5734379.pdfIn PDF document text
    • https://kazuvamelu.weebly.com/uploads/1/3/0/7/130738637/zolanedixorapob.pdfIn PDF document text
    • https://xexajuxeleseg.weebly.com/uploads/1/3/4/5/134592224/a6179406e.pdfIn PDF document text
    • http://pihodze.com/musically_how_to_get_likes3sr2j.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409093/normal_60045a89f0f6a.pdfIn PDF document text
    • http://morpeoplelife.ru/legokafekirezamoziteledo147.pdfIn PDF document text
    • http://wonnaturila.space/bombas_socks_womens_price54dso.pdfIn PDF document text
    • http://mandarin-fruit.space/how_to_identify_inferential_statisticsgyue2.pdfIn PDF document text
    • https://meverelalopabij.weebly.com/uploads/1/3/4/1/134108836/tosuluxeta.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/fokapikow/fuwujipu.pdfIn PDF document text
    • https://s3.amazonaws.com/dowadotiju/manualidades_navideas_faciles_para_nios_de_preescolar.pdfIn PDF document text
    • http://nibizuladode.onlinewebshop.net/91531604756.pdfIn PDF document text
    • https://s3.amazonaws.com/zisulamisozoto/board_of_intermediate_education_karachi_form.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/befufutasujujabonufagagu.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/78267266378.pdfIn PDF document text
    • https://s3.amazonaws.com/bamepofewalada/best_free_android_games_june_2019.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_off0000f96d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF96D 5380 bytes
SHA-256: 6176dc33caf8d0aa9960e9d5694d9614b910ea47e592fe40c853501cac06110c
font_01_sfnt_off00010b9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B9B 11084 bytes
SHA-256: a03d8e9c9acbf1fb7656311a248d92a2bf58d75e0732ab9dbf68cf8b55dd2e40