Malicious PDF — malware analysis report

Static analysis result for SHA-256 135398382612535b…

MALICIOUS

PDF

77.1 KB Created: 2021-04-23 13:02:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 33b25cd0a3f7cfb840803fe9d30e2723 SHA-1: 686f469d64c1d2c095037a0915953f18ed2169d3 SHA-256: 135398382612535b98fc46b95b1574bdcac5a2bea35065a60de797f79d798aca
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one prominent URL pointing to 'lozipotod.ru' which is likely part of a phishing or malware distribution campaign. ClamAV and ML classifiers also flagged this PDF as malicious, specifically as a phishing trojan. The document body, though heavily obfuscated, appears to be a lure related to 'data warehouse definition and examples'. No scripts were extracted, but the presence of many external links suggests a redirection to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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 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.
  • 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://lozipotod.ru/strik?utm_term=data+warehouse+definition+and+examples PDF link annotation
    • http://regvoolkim.website/zitifevexidjdqvg.pdfIn PDF document text
    • https://cdn.sqhk.co/nasonamav/cOibXj3/petty_cash_template_excel_free.pdfIn PDF document text
    • http://meetdouche.xyz/33790510097htzvr.pdfIn PDF document text
    • http://xegomivuz.iblogger.org/36275315938.pdfIn PDF document text
    • http://numberoone.xyz/how_to_do_a_cost-benefit_analysisv049x.pdfIn PDF document text
    • http://qrettalq.online/71658362175mtvwo.pdfIn PDF document text
    • https://cdn.sqhk.co/womafafowix/gfPiehd/54563979718.pdfIn PDF document text
    • http://cleaner360.shop/nobegalipinivalarte8f9.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/fatikonavori/27289627096.pdfIn PDF document text
    • http://zutibebasonuf.epizy.com/application_for_leave_format_for_students.pdfIn PDF document text
    • https://s3.amazonaws.com/nijosinizo/ribufomabomuwer.pdfIn PDF document text
    • https://s3.amazonaws.com/tozaduliwubega/crucify_tori_amos_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/all_my_sons_miller_summary.pdfIn PDF document text
    • http://bamafeze.rf.gd/42740926932.pdfIn PDF document text
    • https://s3.amazonaws.com/roxawo/tipos_de_valores_morales.pdfIn PDF document text
    • https://9e730ba1-499c-413e-9a09-8a81f8121270.filesusr.com/ugd/0a0016_68b2e80946304c9683a24cfcc3db9fcb.pdf?index=trueIn PDF document text
    • http://tamugaza.rf.gd/animal_farm_character_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/wixatax/buseretuzinuj.pdfIn PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/lenakujedek.pdfIn PDF document text
    • https://153f2bed-3501-4ec5-9468-ed1987511f6d.filesusr.com/ugd/f67134_7419af119c5e4f9a9b9470089916469d.pdf?index=trueIn PDF document text
    • https://dd6f0c70-611b-430f-b219-ee0593fd0e1f.filesusr.com/ugd/d60051_289ff96174074f0baed86f78efff5a74.pdf?index=trueIn PDF document text
    • http://rabuxudizuxu.epizy.com/bahubali_full_movie_telugu.pdfIn PDF document text
    • https://s3.amazonaws.com/pirosisob/57980573611.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_off0000ed3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED3A 5440 bytes
SHA-256: 9c866158e5400a4218780a4d2d6f1d102283006bda798a9c91b7583ca0de0dee
font_01_sfnt_off0000ffad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFAD 11476 bytes
SHA-256: 512411a0cecb1d35e6f38b583a889ccaca11258f9bf0a38f98e21084df1bf995

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