Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b2e5c3f6f39122f…

MALICIOUS

PDF

74.3 KB Created: 2021-05-14 05:45:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 2e0bb4999bee627fa31cab9021b85788 SHA-1: c11fe03812c77cc3c3874fb620660ea24ec9900e SHA-256: 5b2e5c3f6f39122f399b80bb83ac2f81805d2b39d03d667fdcb99eb9ceb2b13e
154 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://yafferge.ru/strik?utm_term=coachmen+rv+for+sale+bc In PDF document text
    • http://majexifavel.scienceontheweb.net/beveiliging_cao.pdfIn PDF document text
    • http://vobajujabu.mywebcommunity.org/dedemex.pdfIn PDF document text
    • https://ridogorizaloliv.weebly.com/uploads/1/3/4/5/134527302/lipule-wiguf-duxuv-fogibewuribiv.pdfIn PDF document text
    • http://bnl-jobs.com/wuwamujakuzopamekadbwi6l.pdfIn PDF document text
    • http://esclub.info/86933916221cfhe1.pdfIn PDF document text
    • https://lugijuvumefabi.weebly.com/uploads/1/3/4/7/134761930/8771834e58833.pdfIn PDF document text
    • http://jelolizabuvixi.22web.org/mississippi_drivers_manual_appendix_b_answers.pdfIn PDF document text
    • http://lighterusb24.site/zavuvukepuwivuko3q5g4.pdfIn PDF document text
    • https://rejonogatu.weebly.com/uploads/1/3/5/3/135392998/9522935.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fuvogixerad.epizy.com/unscramble_sentences.pdfIn PDF document text
    • http://nufiwimuzobo.onlinewebshop.net/77922450274.pdfIn PDF document text
    • http://giratas.epizy.com/ice_sheet_and_polar_desert_biome_animals.pdfIn PDF document text
    • https://s3.amazonaws.com/jijumupade/movie_maker_camera.pdfIn PDF document text
    • http://juripijesem.rf.gd/99633493370.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/kagipifagidelape.pdfIn PDF document text
    • http://gejuzimeru.rf.gd/cambridge_pet_test.pdfIn PDF document text
    • https://s3.amazonaws.com/kagedatabujo/32590976283.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/vezomejivutufo.pdfIn PDF document text
    • http://govakuvi.epizy.com/types_of_aptitude_test.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/42052747323.pdfIn PDF document text
    • http://zobovobewuw.epizy.com/29167511565.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_off0000e420.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE420 5224 bytes
SHA-256: ae05ab3cbff430886d812074c8f8f1757350c86a65058854712287cadec9201b
font_01_sfnt_off0000f5c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5C2 11340 bytes
SHA-256: 582841caf6919b221f2dae55cc9f8a3584b652c1e595ca023b90c27666cba5b4

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