Malicious PDF — malware analysis report

Static analysis result for SHA-256 934fdc9f55bd6f43…

MALICIOUS

PDF

69.0 KB Created: 2021-03-23 13:02:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: bf207d96d5346d09d2fd42ecd769fb72 SHA-1: 0572984369c41800038b5f2f8a37ce54f223a596 SHA-256: 934fdc9f55bd6f43ca78434030b15f8fb42733a1fd71e4c50ff9acb9154103ec
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that leads to a domain associated with phishing. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to trick users into downloading further malware or providing sensitive information. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest a phishing lure.

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
  • 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://soxebez.ru/strik?utm_term=factoring+gcf+worksheet+algebra+1+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4422879/normal_5fff26f8243ef.pdfIn PDF document text
    • https://favexolifuluk.weebly.com/uploads/1/3/6/0/136092880/5891654.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473638/normal_5febb20e9fa4b.pdfIn PDF document text
    • http://samabev.iblogger.org/togapulujiw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408479/normal_5fe0a73c258fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365601/normal_5fe75a602b931.pdfIn PDF document text
    • https://masudokunu.weebly.com/uploads/1/3/4/7/134731157/tunatusisi.pdfIn PDF document text
    • https://cdn.sqhk.co/nepodowu/JqcgDja/equations_and_inequalities_worksheet_answer_key.pdfIn PDF document text
    • https://cdn.sqhk.co/xotosira/hjdgdf6/lil_yachty_freestyle_beats_1_lyrics.pdfIn PDF document text
    • https://cdn.sqhk.co/jotepomi/iifbKTQ/word_wallpaper_hd_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486042/normal_5fe4f41b7015b.pdfIn PDF document text
    • https://cdn.sqhk.co/lokiwejawe/cijldji/canon_print_inkjet_selphy_pour_mac.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bitiwumit.rf.gd/donafovepodekefawej.pdfIn PDF document text
    • http://zisemofojakuvew.epizy.com/capites_de_areia_livro.pdfIn PDF document text
    • http://mowigefugitixa.epizy.com/dogaf.pdfIn PDF document text
    • http://lifugefumiwikoz.epizy.com/55630944398.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/pinusejopivizanel.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/rivuno.pdfIn PDF document text
    • https://s3.amazonaws.com/kobivimelelo/jack_reacher_2_netflix_country.pdfIn PDF document text
    • https://s3.amazonaws.com/widetunipet/4784353676.pdfIn PDF document text
    • http://pinixivula.epizy.com/weil-mclain_gv90_error_codes.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_off0000d266.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD266 5448 bytes
SHA-256: 4668f42e2c79a25e5f9e39942dc3c5229c2a2d02b75c7279726d225414933700
font_01_sfnt_off0000e509.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE509 9844 bytes
SHA-256: 542cde4bc1265259e60e5e4180a50bb6616ef06eb9b58393e3fc5b1b4216980c

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