Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfbeb5426c9d90e7…

MALICIOUS

PDF

65.3 KB Created: 2021-02-17 01:36:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 6d7064abbf5ba3c471d90632087e94cf SHA-1: 9f6ae685ec198e9fba344f6cc0d71a7e5c257edb SHA-256: bfbeb5426c9d90e71a54a64ad60970124f155ab3a46fc9eb0db7da23fe11f555
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text related to a search query, suggesting a lure to a malicious website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/123?utm_term=what+is+the+next+dresden+files+book PDF link annotation
    • https://cdn.sqhk.co/rokijatu/gjjhid7/juegos_retro_pc_online.pdfIn PDF document text
    • https://kunisalopug.weebly.com/uploads/1/3/4/3/134315348/duzedibopunuz-mepaj-kebadurenuz-vunemifa.pdfIn PDF document text
    • https://jadusozig.weebly.com/uploads/1/3/5/3/135327359/pewemibe.pdfIn PDF document text
    • http://futufudag.iblogger.org/semejelixo.pdfIn PDF document text
    • https://nagipunewemog.weebly.com/uploads/1/3/5/3/135315215/wajobutoxotigiv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493553/normal_5fffba720e2e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489734/normal_5fd09f4481ad1.pdfIn PDF document text
    • http://baltika-trans.ru/56009263914mpcdt.pdfIn PDF document text
    • http://frasqen.online/meal_break_policy_templatepxfr9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388046/normal_602ae152dbb7b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wuxizajepasuwu.epizy.com/aadukalam_movie_songs_starmusiq.pdfIn PDF document text
    • https://s3.amazonaws.com/genedesowul/6034534075.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/fodupepanebiwile.pdfIn PDF document text
    • http://kupobazixivev.rf.gd/zuwefifegidizobupare.pdfIn PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/title_page_microsoft_word_template.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/alucobond_acp_sheet_size.pdfIn PDF document text
    • https://s3.amazonaws.com/rumezo/nabamomelakukabije.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_off0000c313.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC313 5280 bytes
SHA-256: 71f0ae4a3ee72abe80391f7f5e82f35948e97c4b4024307ac28d2f38932397bd
font_01_sfnt_off0000d510.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD510 10264 bytes
SHA-256: a81486c829dc8b92280cadc84de244ab1c47258003e1f516267687e8fca2d48f

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