Malicious PDF — malware analysis report

Static analysis result for SHA-256 abf9b0e135bf5a0b…

MALICIOUS

PDF

81.5 KB Created: 2021-02-26 03:36:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 6944b152b0c0279fcb490f3757067bd2 SHA-1: 7be76bf74ea0d76df9c33ba2de6bd70dc8de6e4a SHA-256: abf9b0e135bf5a0bb5806d30e5f4c97d38fd6cb429b50b5dc1e964623a0c5e0e
126 Risk Score

Malware Insights

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

This PDF file is identified as malicious by ML classifiers and ClamAV, indicating it's a phishing or trojan attempt. It contains numerous embedded URLs, with at least one, 'https://seumenha.ru/wix?keyword=death+penalty+in+ohio+yesterday', appearing to be a lure for malicious content. The PDF structure and embedded links suggest it's designed to redirect users to potentially harmful websites, likely as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/wix?keyword=death+penalty+in+ohio+yesterday PDF link annotation
    • http://cosmosqrab.online/tigifonufemoxagivufizupojffue.pdfIn PDF document text
    • http://safijejog.mygamesonline.org/46734532110.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459791/normal_601b0e7267635.pdfIn PDF document text
    • http://mrshadow.net/powerschool_mobile_app_code3k5mi.pdfIn PDF document text
    • http://sweetygirl.club/planet_with_most_number_of_moonsi5fe7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369522/normal_5ffcfe8a8d1bb.pdfIn PDF document text
    • http://tejovotemikodes.getenjoyment.net/panasonic_viera_television.pdfIn PDF document text
    • http://women-ita.space/life_fitness_indoor_cycle_ic6_mit_myride_vx_personal_consoleqxa0q.pdfIn PDF document text
    • http://reggis.info/rezidagjr2ft.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490116/normal_601e168e586aa.pdfIn PDF document text
    • http://snail-case.store/802332921080wynt.pdfIn PDF document text
    • http://denizan.com/1066455440539u2w.pdfIn PDF document text
    • https://fozikevogakol.weebly.com/uploads/1/3/1/4/131437046/29173a8dad96f.pdfIn PDF document text
    • http://gepexoliv.medianewsonline.com/wewukudikofiwerunu.pdfIn PDF document text
    • http://reawont.online/commercial_insurance_quote_proposal_template5m0ar.pdfIn PDF document text
    • http://usene.xyz/wesulawubidoviqa.pdfIn PDF document text
    • http://agent-spv.space/flowers_in_the_attic_book_review_common_sense_mediamxadi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gipebevu.atwebpages.com/how_to_get_the_average_atomic_mass_of_an_element.pdfIn PDF document text
    • http://duxepivol.myartsonline.com/xorosipojomebinot.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_off00010386.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10386 5148 bytes
SHA-256: af602f4535e8aa569eb3f78d54f51018638eb22ffaef38667ce372db64c0be28
font_01_sfnt_off0001150f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1150F 10444 bytes
SHA-256: f09febe6f272074401644ef9d758e29799c66b1fbca895c31e2420117109561b

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