Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c86201cd12e1f1c…

MALICIOUS

PDF

81.5 KB Created: 2021-04-07 22:20:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c10aaff1a605bc8af575df525df036e SHA-1: 2365eb06633f48da6119f8b6da8a1d138b102330 SHA-256: 3c86201cd12e1f1c17ff749f8815a91be643edf563af26e5de9349d1887228d3
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 website disguised as a search result. This technique is commonly used to trick users into visiting malicious sites, likely to deliver further payloads or conduct phishing. The ML classifier and ClamAV detection strongly indicate malicious intent.

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://seumenha.ru/strik?utm_term=how+is+katniss+everdeen+described+in+the+book
    • http://arendagg.xyz/14990232934qencw.pdf
    • https://monibobur.weebly.com/uploads/1/3/0/7/130776122/b946b0c51a88d.pdf
    • http://pannochki-art.com/juwipojeguzeradonitawavapt9x3y.pdf
    • http://ptmonline.ru/96160115682ouwq8.pdf
    • https://resafuki.weebly.com/uploads/1/3/1/3/131398359/dozemigaf.pdf
    • http://24goodstore.site/what_is_the_opposite_of_an_inverse_relationshipewwcz.pdf
    • http://metryck.info/2241239607lngo6.pdf
    • https://cdn-cms.f-static.net/uploads/4421615/normal_605d6b679bd1c.pdf
    • https://xevumijujivo.weebly.com/uploads/1/3/1/3/131383583/46d5923e.pdf
    • https://cdn-cms.f-static.net/uploads/4393189/normal_604a4a27bc0d2.pdf
    • http://beach-fruit.fun/15996448125ej0zw.pdf
    • http://tixarofisaru.22web.org/topugiwirilidudamo.pdf
    • http://gufutaca1.xyz/the_quran_in_english_audio2u2yy.pdf
    • https://bipewajebij.weebly.com/uploads/1/3/2/7/132740639/fevifabojewaso.pdf
    • https://cdn-cms.f-static.net/uploads/4473322/normal_602d65f8e3c15.pdf
    • http://fapinudonas.22web.org/la_la_land_movie_free_online.pdf
    • https://jerubezefago.weebly.com/uploads/1/3/0/8/130874212/bukelufofis-sajebiril-vosebabupiw-lizubaxomefem.pdf
    • http://lakowuwi.22web.org/domukawajezovilulabuwana.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fecd.bin
5207e8b6bb032cc9ab16ff5eb3a3f3bc14ecb6a170a6c7acc66cf43ebc7329c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFECD 5312 bytes
font_01_sfnt_off000110eb.bin
e4d9d85c3fb1d109fd8232299e9f4a0470669683a3e9ed7c853b0d1e11556cc6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x110EB 11236 bytes

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