Malicious PDF — malware analysis report

Static analysis result for SHA-256 a387b3346b04a4da…

MALICIOUS

PDF

62.2 KB Created: 2020-11-23 13:51:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 7bc81bdf2e22d1fdb1fbd9bfe960a1d1 SHA-1: b8b8f0d8e37d20d77c1189b8b42916235e2925d1 SHA-256: a387b3346b04a4daf36c15f1a6bb06f7b89914ab8dbd8e22aa2766cc0d6da76e
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffset.ru/strik?utm_term=ps3+param+sfo+editor PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369165/normal_5fb9e4b94c740.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426413/normal_5fbb520314df1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0569754-c46d-4fc9-a53e-ceace9eb5d98/nowubafuzupafebezanofavoz.pdfIn PDF document text
    • https://s3.amazonaws.com/tefelaj/creighton_basketball_schedule_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/65710730002.pdfIn PDF document text
    • https://s3.amazonaws.com/tadevewuju/are_coroners_reports_public_record_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f26bf50-9b7d-4f1b-8b41-00bf190123c5/dugalapazapi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5fdadc0-41f3-4a38-a7a8-cfbe797fd034/zutanubufuwozagunin.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/northern_virginia_soil_and_water_conservation.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/sedaxozoberorideges.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/guacamaya_s_mexican_grill_prescott.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c05721c5-4cd5-417f-aad5-13297b12b99e/jitewogegulovatugajapano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec9a4224-38dd-4eed-a6bb-8fe3290ab807/actividad_integradora_proyecto._fase.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/cool_dragons_roblox.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/16335469295.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_off0000b577.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB577 5320 bytes
SHA-256: e93e0d93c4ee51114738a15f1a7f8dd7f18a16fbb14278f1811a5b0d631031a4
font_01_sfnt_off0000c779.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC779 10944 bytes
SHA-256: 77f8440e32a122b0ac209253da5ed73b23f46c5482814c5dfcfd686319e396bf