Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bb00304491352ae…

MALICIOUS

PDF

77.5 KB Created: 2021-05-21 22:57:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 5b98cb5751090276404adea5a47c8b9f SHA-1: 50b35c6ecdde88b15b05ae3068b4c1d367e7b454 SHA-256: 3bb00304491352ae26eb92ae836ca64ea4216d12fbfcb230bd6a7e9cef75dc16
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which are part of a link farm designed to improve search engine rankings for terms like 'autocad 2017 serial number crack'. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and the presence of external URLs suggest it's designed to redirect users to malicious content or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://druttle.ru/strik?utm_term=autocad+2017+serial+number+and+product+key+crack+for+mac PDF link annotation
    • https://bejasesazopo.weebly.com/uploads/1/3/4/5/134512805/gidimegasaletuk.pdfIn PDF document text
    • https://sokezimipadivob.weebly.com/uploads/1/3/5/9/135959039/7e53d.pdfIn PDF document text
    • https://muxixeronazuxup.weebly.com/uploads/1/3/4/5/134508557/71e55a31518605.pdfIn PDF document text
    • https://jesepivop.weebly.com/uploads/1/3/1/4/131483445/lafaraburadoxaja.pdfIn PDF document text
    • https://wigadanoj.weebly.com/uploads/1/3/4/4/134404864/nanisinuga-winexowoxosogi-xutaxefap.pdfIn PDF document text
    • https://nobujudiwid.weebly.com/uploads/1/3/1/4/131452838/5881882.pdfIn PDF document text
    • https://nimaxosonoj.weebly.com/uploads/1/3/4/8/134897368/buwafagu_telesuda_wimes.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/nisoxow/filamuribozoxil.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/66913323963.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f580713-a3e6-4b24-86ba-dadf131eff5b/68060023402.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/99427104252.pdfIn PDF document text
    • https://s3.amazonaws.com/wupixufekijax/22138724781.pdfIn PDF document text
    • https://s3.amazonaws.com/gawabog/identifying_degree_and_type_of_polynomials_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/gotitibekovi/yard_machine_lawn_mower_specs.pdfIn PDF document text
    • https://s3.amazonaws.com/vavapekadoliti/dental_assistant_cv_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tarizirefevifab/enigmatica_2_skyblock_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9118e3a8-f7cf-4765-84f6-220247a20d97/lexus_es_300h_2020_price_in_india.pdfIn PDF document text
    • https://s3.amazonaws.com/kovibu/94542067391.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c61e093b-a9eb-48d1-98eb-5c67e932a2f8/89014226804.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b36e8239-dd8b-4ed1-b24a-aaa697167c3a/lekizekidarabepurupu.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/uscis_citizenship_form.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_off0000ef68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF68 6004 bytes
SHA-256: 45e00fc7fe82be26c4ac74a9c26384f1c10f33f509da38096fe2e3dc7a1ae6f4
font_01_sfnt_off000103d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103D6 10672 bytes
SHA-256: 9482d86d4f8fb1a87e0cac8c56b77f16ad68653f8c776bc5d684170fdca85c45

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