Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ccba0a93425fc16…

MALICIOUS

PDF

70.8 KB Created: 2021-02-24 17:21:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: ce021c9af51dd5d6baff9516fd317c34 SHA-1: 993ed7660f5bed45cf05e748b6d338b290d9ad56 SHA-256: 8ccba0a93425fc1638a81e3fe5a5cd3f91975576cd7a551bf05d5926c8a35fb4
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a site impersonating job search results, likely a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious content, potentially exploiting PDF vulnerabilities or serving as a dropper.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/strik?utm_term=information+technology+trainee+jobs+near+me PDF link annotation
    • http://kutatit.getenjoyment.net/37862128307.pdfIn PDF document text
    • http://punejew.mygamesonline.org/kixijorubulidot.pdfIn PDF document text
    • http://terugate.mypressonline.com/63196988890.pdfIn PDF document text
    • http://kamikofonem.mygamesonline.org/xifufadi.pdfIn PDF document text
    • http://loduwij.scienceontheweb.net/54746274149.pdfIn PDF document text
    • http://rafupofamurawaf.mygamesonline.org/sony_rx10_v_news.pdfIn PDF document text
    • https://kiparefewegapip.weebly.com/uploads/1/3/2/6/132682538/nukigo.pdfIn PDF document text
    • https://vudefuzafovafid.weebly.com/uploads/1/3/4/6/134630521/jewivol.pdfIn PDF document text
    • http://sosed.market/rusekedenevodemiro43zz.pdfIn PDF document text
    • https://pigijolewafa.weebly.com/uploads/1/3/4/2/134235355/fupagerutobef_runawobevep_gonegeso.pdfIn PDF document text
    • http://sweetmeet.online/wugejanaduftccmu.pdfIn PDF document text
    • http://power-guard.shop/2005_chevy_trailblazer_lt_owners_manualiw6zw.pdfIn PDF document text
    • https://bibawegosisuzu.weebly.com/uploads/1/3/5/9/135961680/2581585.pdfIn PDF document text
    • http://znakomstva18x.site/printable_english_worksheets_for_4th_gradeidcq5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/pululusodogi/tusotozisagazubov.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/vesigeloboxibe.pdfIn PDF document text
    • https://s3.amazonaws.com/zodererezuzuxi/10_point_likert_scale_word_template.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/79287323568.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/the_great_depression_usa_years.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB4D 5340 bytes
SHA-256: d082bea58b01889548d43ab1ffd56935f6fd35e7060b6b9264e74b55ee675cb6
font_01_sfnt_off0000dd47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD47 10100 bytes
SHA-256: 58bef39999f1913653da9429026f2ec99f044f44a93d212e80420a4235ac83c7
font_02_sfnt_off0000ffd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFD3 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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