Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9220868ca8686a5…

MALICIOUS

PDF

82.8 KB Created: 2021-05-09 16:59:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: ffa8cbcd0c9378368a783e35577a2466 SHA-1: c10da94db214545f93e500a04bd337a4c9f4d537 SHA-256: e9220868ca8686a50c4591ff0e288f677b57ec26e066ca214805928c6154d822
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm designed to redirect users to potentially harmful content. The presence of 'utm_term' parameters in some URLs further supports a phishing or malicious redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

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
  • 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://jacksth.ru/strik?utm_term=sa+hip+hop+album+charts+2020 PDF link annotation
    • http://zasufigonibat.getenjoyment.net/bsc_nursing_3rd_year_syllabus_ruhs.pdfIn PDF document text
    • http://tigafik.mygamesonline.org/15172429590.pdfIn PDF document text
    • http://leludezoz.scienceontheweb.net/widejixatew.pdfIn PDF document text
    • http://gixitetopes.scienceontheweb.net/new_bangla_islamic_book_download.pdfIn PDF document text
    • http://tegotapiw.scienceontheweb.net/sudib.pdfIn PDF document text
    • http://vezukugijisepo.scienceontheweb.net/lavikiki.pdfIn PDF document text
    • http://jorowijedo.mywebcommunity.org/computer_hardware_engineer_colleges_in_india.pdfIn PDF document text
    • http://dilawiputonu.mypressonline.com/who_makes_rheem_furnaces.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://57fc24c6-ba7c-430a-bdae-05304608b610.filesusr.com/ugd/bc9c68_ea6cee7f24fc465ab4a5ce25653be0aa.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/29211917195.pdfIn PDF document text
    • https://67d298e0-85f4-4ad4-bf36-e1ac857e42fc.filesusr.com/ugd/b6bf5b_d847ce190bc647c397abc94d7be85aa4.pdf?index=trueIn PDF document text
    • https://ba3a7bb5-edd2-4228-b29c-cf272df6a868.filesusr.com/ugd/bd1c09_b2c7ebbe44c44d7d910f77dc1f926d22.pdf?index=trueIn PDF document text
    • https://6f465708-eb37-4ee2-8658-ebeec6cd93ea.filesusr.com/ugd/4bb103_6bf0dbd7b15c4f72959305107b98b823.pdf?index=trueIn PDF document text
    • https://03234a85-d811-4a68-a1f9-f7315bf9ccb2.filesusr.com/ugd/079591_b1c638d047d5492caa4438574cb67da1.pdf?index=trueIn PDF document text
    • http://lojabupabavize.onlinewebshop.net/fubirusenenosixamubadi.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/jopojot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4fd966b-b992-4e02-bcfe-d66b5403f1f4/did_snow_white_and_prince_charming_leave_once_upon_a_time.pdfIn PDF document text
    • https://5b3fc17b-a4fb-4144-9a53-ff617e35bc6a.filesusr.com/ugd/696117_3cfe58b5c68849df9c2a6c8fe0968267.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wozowuledij/technical_analysis_of_indian_stocks.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/favezaralesotisuzare.pdfIn PDF document text
    • https://b4140449-9b96-4148-8619-c9b3eed7b48c.filesusr.com/ugd/c33cdb_9318825e06984752912c200bb0f7eb94.pdf?index=trueIn PDF document text
    • http://dasobiviwadodaj.atwebpages.com/alkenes_class_11_notes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9810d616-9422-4b8c-b226-5c70c80db75c/vedic_astrology_reading_near_me.pdfIn PDF document text
    • https://0f801bcd-45a9-4b76-a81e-d79ec8717d92.filesusr.com/ugd/b0b521_1ac722c3af0a45e7a3ed794813abc9b2.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee554bde-12bb-4e4c-b94d-ed34834ad524/desekefigaguji.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/84531520473.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_off00010496.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10496 5688 bytes
SHA-256: c2ceff318adadda7cacf61098d46debd8493b0c6263ccfe24ca590ebf39de9a8
font_01_sfnt_off000117be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117BE 11316 bytes
SHA-256: ab043ca9fb202aae0dfb85e0dfaca6e54c8d1f51b5e9ca7113fec48a906b5ae9

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