Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cd1bbc2b71c3209…

MALICIOUS

PDF

104.5 KB Created: 2021-03-04 09:10:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: f828e06000738b679338ddf12217e6e3 SHA-1: fb8a796302c9da91d856402e966d288e63d4ffd3 SHA-256: 2cd1bbc2b71c320976e07438bca47e1d2c3ec4051fdeae6b92b8f566de5de73c
96 Risk Score

Malware Insights

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

The file is a PDF document that contains embedded URLs, one of which is flagged as suspicious and related to marketing. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The presence of multiple suspicious URLs suggests a campaign aiming to redirect users to malicious sites.

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://maypoin.ru/strik?utm_term=marketing+digital+que+es+y+c%25C3%25B3mo+funciona PDF link annotation
    • http://rufoferapavinew.medianewsonline.com/velojikajadufuluzar.pdfIn PDF document text
    • https://cdn.sqhk.co/femuzetoj/gyhbRig/game_wedding_salon_2_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/bipaneri/ezTAVig/tiktok_songs_playlist_lyrics_dance.pdfIn PDF document text
    • http://natlegend.space/kevifoxerudurekenenejidk0v3s.pdfIn PDF document text
    • http://sipipewawezizuf.getenjoyment.net/how_to_use_playing_cards_for_fortune_telling.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480412/normal_600858e355889.pdfIn PDF document text
    • http://kapusta.pro/zixitutosuwazu7cr.pdfIn PDF document text
    • http://study-english-04.space/niromakixasogefulumotep3kn1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401989/normal_5fec1bac6ce45.pdfIn PDF document text
    • http://ar-foto.art/nutrition_and_dietetics_books_free_downloadf0zwt.pdfIn PDF document text
    • http://formulamoney.top/210662842963angv.pdfIn PDF document text
    • https://cdn.sqhk.co/livatunozasu/iiejjjc/transfer_paper_for_wood_burning.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wozoxub/14150339962.pdfIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/2018_calendar_india.pdfIn PDF document text
    • https://s3.amazonaws.com/gapuruxumeg/how_to_clean_ink_absorber_canon_mg2520.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/biblia_de_estudio_thompson.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_off00015849.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15849 5772 bytes
SHA-256: e86c24e5449600d6118ad0c1f6807684235cdfb4dd03f7895dc67ee4198a9672
font_01_sfnt_off00016bac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16BAC 11940 bytes
SHA-256: 437994dff7661cbc54c2b779ef1458de6191cb295bd15e81b6f1dc8bfb149907

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