Malicious PDF — malware analysis report

Static analysis result for SHA-256 f871b25bc86965e1…

MALICIOUS

PDF

84.0 KB Created: 2021-03-15 06:46:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00220b7678b77b64a5ef06fe6c97b5db SHA-1: 24267d1c61271eb09a6408ae9dd8ba525bd051ec SHA-256: f871b25bc86965e18d8dbbdcde414fd8766d36951548f47b1ed450341d68d75f
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 phishing site, disguised with search terms. ClamAV and ML classifiers strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to lead the user to a malicious external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://xezojetit.ru/strik?utm_term=panasonic+cordless+phones+costco+canada
    • https://cdn.sqhk.co/pajelidul/b8Wngia/niboxem.pdf
    • https://visoxifa.weebly.com/uploads/1/3/2/7/132740860/laxopi.pdf
    • https://cdn-cms.f-static.net/uploads/4460966/normal_60312bd58fc8a.pdf
    • https://cdn-cms.f-static.net/uploads/4486354/normal_60499c094b184.pdf
    • https://cdn.sqhk.co/titolegun/KxfjheD/matchington_mansion_hack_2020.pdf
    • https://static.s123-cdn-static.com/uploads/4446638/normal_600401e24448a.pdf
    • http://bitagaratela.22web.org/19418328592.pdf
    • https://cdn-cms.f-static.net/uploads/4411220/normal_604d93aa00daf.pdf
    • https://static.s123-cdn-static.com/uploads/4369768/normal_5fd078164485d.pdf
    • http://kiwedoro.66ghz.com/ansible_template_iterate_array.pdf
    • https://xasejudezorakoz.weebly.com/uploads/1/3/0/8/130813307/gabozeri.pdf
    • https://lujogome.weebly.com/uploads/1/3/4/6/134617312/zorupevesafube-xinemiliz-xuvuwipoverokam.pdf
    • https://static.s123-cdn-static.com/uploads/4412570/normal_600270dd3637d.pdf
    • https://cdn-cms.f-static.net/uploads/4381756/normal_6039b82d6ec47.pdf
    • https://cdn.sqhk.co/bosamame/LB0ggcw/52777877998.pdf
    • https://cdn.sqhk.co/jigixomavola/hjCP91T/84312110601.pdf
    • https://static.s123-cdn-static.com/uploads/4421217/normal_5ff791a3c8e78.pdf
    • https://tazimomudaz.weebly.com/uploads/1/3/5/9/135960162/600046.pdf
    • https://static.s123-cdn-static.com/uploads/4484635/normal_5ff84b5f1b547.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/kujapomib/35714890094.pdf
    • https://s3.amazonaws.com/xoxaneral/kuvokenifozebokizubosed.pdf
    • https://s3.amazonaws.com/julexekubaj/before_sunrise_movie_in_coolmoviez.pdf
    • https://s3.amazonaws.com/genedonapubefe/cash_flow_report_adalah.pdf
    • http://lonivone.rf.gd/72369945789.pdf
    • https://s3.amazonaws.com/jidosatikim/kibamijogofivalosal.pdf
    • http://bolatufor.epizy.com/building_blockchain_projects_free.pdf
    • http://notovaraze.rf.gd/contoh_soal_akuntansi_perusahaan_dagang_lengkap.pdf
    • 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_off00010aa0.bin
62967648adc1faadb4545c6fd859c2c9b6fc10239f7128e46dfb6bdb1c79884d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10AA0 5164 bytes
font_01_sfnt_off00011c22.bin
bdf6aa3e86907b04acdac060ee0355e85442650db93034324bd5618927ae2410		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11C22 11268 bytes

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