Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ef289249bd1a295…

MALICIOUS

PDF

88.7 KB Created: 2021-05-03 04:01:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 29aefd2b677706173b50565bd8b2716b SHA-1: a8adbb32b66540f40ad23f129ed0120b533209f6 SHA-256: 4ef289249bd1a295b1500ed9b370617fd5780d1cacb54361f156283e1822b7a2
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating an external URI, specifically 'https://jumiwimov.ru/strik?utm_term=dymo+labelwriter+450+turbo+spool'. This URL is likely part of a phishing attempt to trick the user into visiting a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://jumiwimov.ru/strik?utm_term=dymo+labelwriter+450+turbo+spool PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4421783/normal_602aeae058278.pdfIn PDF document text
    • http://bazubufawe.22web.org/26031049046.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385887/normal_5fc5c33641856.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416321/normal_6001ef4b8bd9a.pdfIn PDF document text
    • http://kojewotezigu.iblogger.org/stephen_hawking_movie_the_theory_of_everything_netflix.pdfIn PDF document text
    • http://jegagavakunumog.iblogger.org/weed_eater_riding_lawn_mower_reviews.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465704/normal_601b1fdf92146.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463533/normal_601ed8a5ab030.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/votubukaxogilix/48681777149.pdfIn PDF document text
    • http://vizawog.epizy.com/gizokakena.pdfIn PDF document text
    • http://dafefixekonaxo.epizy.com/sajovofulazobava.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/57236243283.pdfIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/kivagitu.pdfIn PDF document text
    • http://ruzunol.rf.gd/jspdf_autotable_line_break_not_working.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/rejimizojobo.pdfIn PDF document text
    • http://gataluxogawix.epizy.com/17653407011.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubifirigevi/how_much_is_a_wolf_double_oven.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/23545527891.pdfIn PDF document text
    • http://pazatirademe.rf.gd/12607067504.pdfIn PDF document text
    • http://rumakepalo.rf.gd/8190637477.pdfIn PDF document text
    • http://dopudovorapimu.rf.gd/38908799369.pdfIn PDF document text
    • https://s3.amazonaws.com/biwuwukesazef/division_of_polynomial_by_monomial_worksheet.pdfIn PDF document text
    • http://gujodelabugujaf.rf.gd/97112066321.pdfIn PDF document text
    • http://benifolagalat.epizy.com/54323889894.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/kinuson.pdfIn PDF document text
    • http://pekufupudemolor.epizy.com/ancient_civilizations_grade_4_worksheets.pdfIn PDF document text
    • http://vedujekobizu.rf.gd/13871538625.pdfIn PDF document text
    • https://s3.amazonaws.com/latufenaw/devilsaur_farming_guide_wow_classic.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_off00010f89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F89 5652 bytes
SHA-256: b7cd7da51721cde998bca33e14bd85a9cdec41b5ff8e670e69d8259e1323b50c
font_01_sfnt_off000122c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122C9 15716 bytes
SHA-256: 673f4b5fb9b38dcee6d4fea3f8d691ddad2c968479ef7353792422b4a5601e34

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