Malicious PDF — malware analysis report

Static analysis result for SHA-256 43dbfa73415d0ccd…

MALICIOUS

PDF

79.6 KB Created: 2021-05-01 06:44:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 2d9ea95910485494b3d0cca726cdf28c SHA-1: 5b809c33559bc5afbe5dd3b1f13a7da074624857 SHA-256: 43dbfa73415d0ccd3885a6b7733342d596367512e12baee99c04fac68b9b18df
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that redirects to a malicious domain, likely as part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to a search query, further supporting a phishing attack pattern.

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://mezovuduw.ru/strik?utm_term=how+to+label+multiple+plots+in+mathematica PDF link annotation
    • http://tewatag.medianewsonline.com/makalah_gastroenteritis_akut.pdfIn PDF document text
    • http://mibejar.sportsontheweb.net/38971137610.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://ligumawi.epizy.com/jiwajipez.pdfIn PDF document text
    • http://diturasenupope.epizy.com/what_are_the_best_pokemon_booster_boxes.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/53238942997.pdfIn PDF document text
    • https://s3.amazonaws.com/wovisak/71121693665.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/angielski_matura_podstawowa_gramatyka_wiczenia.pdfIn PDF document text
    • https://s3.amazonaws.com/rafiralexezol/mammoth_mountain_weather_report.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/evh_5150_iii_el34_50_watt_settings.pdfIn PDF document text
    • http://muwuvago.atwebpages.com/bugej.pdfIn PDF document text
    • http://wedutatitupaze.epizy.com/facebook_messenger_lite_apk_for_android.pdfIn PDF document text
    • http://munugarufidapob.rf.gd/catabolismo_de_lipidos_y_proteinas.pdfIn PDF document text
    • https://s3.amazonaws.com/salade/bio_rad_cfx96_software.pdfIn PDF document text
    • http://wamoxavetemus.epizy.com/kepercayaan_animisme_di_malaysia.pdfIn PDF document text
    • http://xugenakijab.epizy.com/84399425123.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/wedding_e_card_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/gowales.pdfIn PDF document text
    • https://s3.amazonaws.com/goveruduzewoxu/96435811398.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/journal_citation_reports_isi_thomson_reuters.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7DC 5152 bytes
SHA-256: 59f8db0cb33809437688d9254277987497c6e9c2628738ea3f5416fb8037adc9
font_01_sfnt_off0000f949.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF949 11768 bytes
SHA-256: 83de91cc8f90db942ae6c75fa29bf4589c2bcb6af44dbbc0f0875c7253bf8767
font_02_sfnt_off00012107.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12107 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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