Malicious PDF — malware analysis report

Static analysis result for SHA-256 8edf3746cdf762b6…

MALICIOUS

PDF

72.5 KB Created: 2021-01-12 11:31:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 400c30270ba695294abf7df3eff66b04 SHA-1: 50af0d55bc86ec848824c8c28d8072ee7f420827 SHA-256: 8edf3746cdf762b6b9d94c933ddf86d342126566ee340f95fd3b451294724691
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text related to 'Mataji aarti audio' which is likely a lure to disguise the malicious nature of the PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9920

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://trafficel.ru/aws?utm_term=mataji+aarti+audio PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4446170/normal_5fd086a114bc0.pdfIn PDF document text
    • https://cdn.sqhk.co/kexofodatop/UYihfie/3756895332.pdfIn PDF document text
    • https://site-1167955.mozfiles.com/files/1167955/38824583500.pdfIn PDF document text
    • https://cdn.sqhk.co/tuwagezo/W2HgfhG/advertising_marketing_jobs.pdfIn PDF document text
    • https://site-1173894.mozfiles.com/files/1173894/cost_of_homeschooling_in_texas.pdfIn PDF document text
    • https://cdn.sqhk.co/salobosemiv/P1idSgh/somomegajibolamod.pdfIn PDF document text
    • https://site-1168348.mozfiles.com/files/1168348/88306614666.pdfIn PDF document text
    • https://cdn.sqhk.co/jekefebiba/ihAggLT/slots_lv_no_deposit_bonus_codes_september_2019.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/tirimofufemukat/import_file_names_into_excel_spreadsheet.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c9af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9AF 3012 bytes
SHA-256: 9f4b9a9fcd4a7fd0527f4694b63b992009dd0bd78dc606659ad1eebee4df53ff
font_01_sfnt_off0000d476.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD476 4692 bytes
SHA-256: 3d380cb8e59501543112bcd29e66c18bf6d4069763727f73832c7079e697efb9
font_02_sfnt_off0000e485.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE485 10656 bytes
SHA-256: 910eeeaf05300c4af13405e4c857d3fcb8658bd1a4d554ca4d75ae1a751598b4
font_03_sfnt_off0001095c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1095C 2808 bytes
SHA-256: 43f947eba79c4c2c017bd44f923777c5a94ee9129bf9c6251d251d9ae7775f94