Malicious PDF — malware analysis report

Static analysis result for SHA-256 52f8b55ea884cf17…

MALICIOUS

PDF

79.4 KB Created: 2021-06-02 21:14:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: b17f457920a430e34357fea2013ecee2 SHA-1: 62de85a8efb47f71606d1836c8859176e574e016 SHA-256: 52f8b55ea884cf1773f1aed2cb1367e8ce9fd08d59bf9bc6d0cba69e6b89e3a0
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. The document contains numerous embedded URLs, with one prominent URL pointing to a link farm designed to redirect users. The presence of a sensationalized headline in the document body suggests a phishing or social engineering lure to encourage clicks on these malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://pixomot.ru/pbw?utm_term=bollywood+actress+died+in+young+age PDF link annotation
    • https://bekazavaf.weebly.com/uploads/1/3/5/3/135327011/9339823.pdfIn PDF document text
    • https://fidejilajusaxe.weebly.com/uploads/1/3/4/3/134363993/966a7ad9190d87.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4420903/normal_60b0f4e616026.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448558/normal_601b43101c4b6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427811/normal_5fc7e72f887ec.pdfIn PDF document text
    • https://tuvepovuno.weebly.com/uploads/1/3/3/9/133997374/0d2b159.pdfIn PDF document text
    • https://pofaleronuk.weebly.com/uploads/1/3/4/7/134722597/f953e18032eea.pdfIn PDF document text
    • https://nafufarub.weebly.com/uploads/1/3/4/2/134266214/e9906d2f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389586/normal_600e133262365.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455901/normal_60657ba883852.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mifimoruzuwo.pbworks.com/f/download_sii_decrypt_tool.pdfIn PDF document text
    • http://luwapoveduvi.pbworks.com/w/file/fetch/144485109/97199160753.pdfIn PDF document text
    • http://fatakalewene.pbworks.com/f/dogamojumiwe.pdfIn PDF document text
    • http://larabefejaji.pbworks.com/f/livros_de_medicina_em_para_download_gratis.pdfIn PDF document text
    • http://natizasex.pbworks.com/w/file/fetch/144411435/human_genetics_concepts_and_applications_12th_edition_by_ricki_lewis.pdfIn PDF document text
    • http://jejosuxiz.pbworks.com/w/file/fetch/144495300/how_to_set_time_on_timex_indiglo_expedition_watch.pdfIn PDF document text
    • http://pokuwatosat.pbworks.com/f/can_i_download_netflix_movies_on_my_chromebook.pdfIn PDF document text
    • http://bevojoluvu.pbworks.com/f/84542764107.pdfIn PDF document text
    • http://paditoxef.pbworks.com/w/file/fetch/144488184/ice_age_3_full_movie_in_hindi_download_pagalmovies.pdfIn PDF document text
    • http://laxaxufudej.pbworks.com/w/file/fetch/144508767/60183375379.pdfIn PDF document text
    • http://kepojijudiva.pbworks.com/f/26184525689.pdfIn PDF document text
    • http://foxobekizax.pbworks.com/f/are_raspberry_worms_harmful_to_humans.pdfIn PDF document text
    • http://lakebimutep.pbworks.com/f/najarokovutoberipus.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_off0000f7ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7FF 5348 bytes
SHA-256: dcbc29760fcfa61b73eaf85b195cb24b4e4ebb2037078baa63a2d3c37c95825d
font_01_sfnt_off00010a5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A5C 10520 bytes
SHA-256: d8f3785eff48528a70611581925b06d2ca8fb470db2f9ac29cefe72e50c1d400

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