Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d06659d347eec2f…

MALICIOUS

PDF

83.2 KB Created: 2021-03-12 10:32:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: e5412e390019118d577f71d732ef2d2c SHA-1: 14a9fec8beb59d791e3cca41409f0c454b9f6b67 SHA-256: 4d06659d347eec2feb017536c11d9cf0abc185d91317b996f1f0f40b30d20275
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are obfuscated or lead to potentially malicious domains, as indicated by the 'PDF_SEO_LINK_FARM' and 'ML_NYX_PDF_MALICIOUS' heuristics. ClamAV also detected it as 'Pdf.Phishing.Trojan'. The document body, though heavily obfuscated, contains a search query that likely serves as a lure to direct users to these malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://seumenha.ru/strik?utm_term=are+there+vr+movies+for+ps4 PDF link annotation
    • https://resigigemi.weebly.com/uploads/1/3/5/3/135326159/8059452.pdfIn PDF document text
    • https://fusufuxono.weebly.com/uploads/1/3/1/6/131606103/d85e77bab3b980.pdfIn PDF document text
    • https://gabinomila.weebly.com/uploads/1/3/4/7/134763369/317d3101371df82.pdfIn PDF document text
    • https://ludalobupum.weebly.com/uploads/1/3/4/5/134528654/2012401.pdfIn PDF document text
    • http://dadevizevarek.scienceontheweb.net/17585311198.pdfIn PDF document text
    • http://fidofawi.medianewsonline.com/final_fantasy_7_complete_walkthrough.pdfIn PDF document text
    • https://sasadopebob.weebly.com/uploads/1/3/5/3/135324308/1360643.pdfIn PDF document text
    • https://funoridarudaru.weebly.com/uploads/1/3/5/3/135304061/nigozafopake.pdfIn PDF document text
    • https://velalozelo.weebly.com/uploads/1/3/4/4/134498802/3503213.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://49b821e7-ee7e-41b4-809b-d0417b8c1ddf.filesusr.com/ugd/927743_96a1be9aa4d048dc919eae592271a093.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dejazuvorira/jasper_report_maven_dependencies.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/rixudijinawovemijexiduxu.pdfIn PDF document text
    • http://gemovimuwopete.atwebpages.com/beltline_bar_menu.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/967005549.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/alamelu_manga_song.pdfIn PDF document text
    • http://nufiwimuzobo.onlinewebshop.net/38474811880.pdfIn PDF document text
    • https://dacf5b84-f80e-4bd8-bb7f-22aad20a1cd8.filesusr.com/ugd/285be4_47ba1458de4347c490b1a7e8fe03d197.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/fun_geometric_constructions_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/fikuvine/43442587662.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/free_dashboard_templates_bootstrap.pdfIn PDF document text
    • https://66c7139a-03c0-45fe-98d3-e817d1e01442.filesusr.com/ugd/de2db5_a02cfa357e8140a2b7a8498b1aa32e7e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kiwopusafize/board_of_blood.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_off0001076a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1076A 5036 bytes
SHA-256: f35557898fb3e9f5e144ede1b16e103fd9f1ea6de3f24dae71b1c8b81eed1a84
font_01_sfnt_off00011871.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11871 10960 bytes
SHA-256: c27f314648af72eaaf2932c2b7992eee778fde1c72d9acd2ca3e03a4f4da41bf

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