Malicious PDF — malware analysis report

Static analysis result for SHA-256 e213717e1f9de6b4…

MALICIOUS

PDF

69.6 KB Created: 2021-02-09 06:16:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: bd5e8ccd115e8216700a6680374b5ae3 SHA-1: 9df07209a4abb3471c9ab965f031819fd2f7f6f1 SHA-256: e213717e1f9de6b4c8968e3756f3c2ad0176b5564d154a9c91df84358042861c
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wb?keyword=compound%20sentence%20worksheet%20second%20grade In PDF document text
    • http://hookup673.site/king_s_raid_successors_of_the_will_malobj6n.pdfIn PDF document text
    • https://bigonokefexix.weebly.com/uploads/1/3/4/5/134518339/vamuxesobujeg_wixiril_duzujig.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407057/normal_5fe8ef4ba9e43.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495849/normal_6000b8f9b6975.pdfIn PDF document text
    • http://naturebiolog.space/75583334558e13cr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414173/normal_60214c19f0149.pdfIn PDF document text
    • http://csxmoney.info/mystery_of_the_long_lost_8th_9th_and_10th_books_of_moseszjw32.pdfIn PDF document text
    • http://canonsburglake.org/18631559006nexli.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/povelenavuviw/ae_dil_hai_mushkil_movie_filmyhit.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/list_of_biotech_companies_in_bangalore.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/easy_beginner_piano_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/tatasurise.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/babylon_dictionary_glossaries.pdfIn PDF document text
    • https://s3.amazonaws.com/fosawef/dissolution_of_the_monasteries_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/non_allergic_rhinitis_treatment_guidelines.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_off0000d348.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD348 5516 bytes
SHA-256: dea28a063a351b72f8a39aceaf2625320592a765ccc4e1e9b56a8e9bf001b9ff
font_01_sfnt_off0000e5ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5ED 10388 bytes
SHA-256: 641c9b5904950e35e7ee39ead337fee49cf2007796c11b98180809cfdd2845b6

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