Malicious PDF — malware analysis report

Static analysis result for SHA-256 38411344176a2e24…

MALICIOUS

PDF

79.0 KB Created: 2021-04-02 12:50:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 066d467ae6125bbf813de5e6a91351e9 SHA-1: 081ba4aef931412ac84d160885d42a4853ae0595 SHA-256: 38411344176a2e24072a6edc2bfb4d6960d55f82589ed37cb5b7ff2de7682527
116 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains embedded URLs, with the primary one being 'https://vilenefex.ru/award?keyword=currency+symbols+list+with+country+name+pdf', suggesting a phishing or credential harvesting attempt. The malformed stream length heuristic further supports the presence of malicious content within the PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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://vilenefex.ru/award?keyword=currency+symbols+list+with+country+name+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4422914/normal_6036d65597f9b.pdfIn PDF document text
    • http://shopsupergood.site/24462149802kvusi.pdfIn PDF document text
    • http://useporte.xyz/2007_honda_fit_headlight_bulb_sizevrl7n.pdfIn PDF document text
    • http://ttop-shop.com/contrato_de_arrendamiento_de_habitacion_sencillo_colombiacr414.pdfIn PDF document text
    • http://wiinorama.website/what_is_the_study_of_sociology_in_collegec01mm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447251/normal_605a3c9dbaa20.pdfIn PDF document text
    • http://dkshlyap.ru/texas_dps_hazmat_test_answerskvhbg.pdfIn PDF document text
    • http://idealica-ordina.site/409711678334poxd.pdfIn PDF document text
    • http://logvoz.ru/mejaleworefixejuzubafepq2rhi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370089/normal_601ba90f4efff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464878/normal_60132af3f0e29.pdfIn PDF document text
    • http://1offpark.xyz/33620060965g2kjf.pdfIn PDF document text
    • http://hs-life.ru/conversor_pulgadas_a_milimetros_diametroiimxy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458848/normal_5ff13487ae2d7.pdfIn PDF document text
    • http://natikolom.site/candida_dietyzcvz.pdfIn PDF document text
    • http://rebelliona.online/toganefisubitadupujikurewik91.pdfIn PDF document text
    • http://all-host.site/bebukimejegibegasopazofoceamn.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/fedufiporara/tigeguxegisegopuxaxejugiw.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/65777273050.pdfIn PDF document text
    • https://s3.amazonaws.com/gupojakami/damatozefudubevozuxam.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/6357325968.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/attendance_sheet_format_for_training.pdfIn PDF document text
    • https://s3.amazonaws.com/genedesowul/mma_awards_2018_bts_performance.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/zuvuj.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/nosekogonilanu.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/airplay_apk_cracked.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_off0000f440.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF440 5636 bytes
SHA-256: 62decd6cccc784e86c9046fd7a3c5be8f08f7d4f03cdd4b018e20b4c4e37085e
font_01_sfnt_off00010750.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10750 11416 bytes
SHA-256: 49a1a48ff8ce580713ad1623dfaf924947fbb6e3afef05c024ec8959ecb0295a

Open this report in the interactive analyzer, or submit your own file for analysis.