Malicious PDF — malware analysis report

Static analysis result for SHA-256 62e446ef9cd478ec…

MALICIOUS

PDF

83.6 KB Created: 2021-02-24 18:01:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 07b21d69e974ab902ba1248a2579c8d2 SHA-1: 98293ef1303da3cfd3b43e080e94ad2f11c319c8 SHA-256: 62e446ef9cd478ec10fe0f53b9de480315215e8e247e40f558ce41db25ab24b9
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal a significant number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to potentially harmful content. While no scripts were directly extracted, the presence of numerous URLs points towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://baarspo.ru/strik?utm_term=un+puente+hacia+terabithia+online+espa%25C3%25B1ol+castellano PDF link annotation
    • https://pesawuzopedeg.weebly.com/uploads/1/3/5/3/135327269/516247.pdfIn PDF document text
    • http://zaxevef.getenjoyment.net/what_is_the_salary_of_a_certified_medical_assistant.pdfIn PDF document text
    • http://fasekafalig.scienceontheweb.net/what_are_the_environmental_indicators.pdfIn PDF document text
    • http://tehnikator.ru/goblet_of_fire_download6g17a.pdfIn PDF document text
    • http://fakixigulidol.mywebcommunity.org/what_is_grounded_theory_analysis_in_qualitative_research.pdfIn PDF document text
    • http://opensalle.xyz/alesis_dm10_manual0lt6r.pdfIn PDF document text
    • https://vevusivo.weebly.com/uploads/1/3/0/8/130874001/mupizumutebufo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369786/normal_5ff160fea6438.pdfIn PDF document text
    • https://diwoneguni.weebly.com/uploads/1/3/1/4/131407083/soloz.pdfIn PDF document text
    • https://sonunupenoxomo.weebly.com/uploads/1/3/3/9/133986361/6686960.pdfIn PDF document text
    • https://fufopijubotuxo.weebly.com/uploads/1/3/1/3/131381544/xegasegep_kipegeduvorar.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/wotodedaruzuk/speaker_certificate_of_appreciation_template.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/86797196416.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/how_to_use_google_classroom_for_teachers_2019.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF98 6440 bytes
SHA-256: 629123bfde0685c5f69bbdd27ec008bde0224d5c30af1dabb990f6ee33ea778e
font_01_sfnt_off0000ef8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF8C 5364 bytes
SHA-256: 11f018185729bfaedfe0fd24c4f3bca0331c2531a66d1db4a1414e2bbfe658ff
font_02_sfnt_off00010179.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10179 12128 bytes
SHA-256: 9c1bf0f68faa6c37f3986b1f4f184f1654ed929d230998128d9caf9604891dee
font_03_sfnt_off000128f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128F5 16168 bytes
SHA-256: 794d8cc090a449e0d460036171b2d5b2c749cb0dc3f17972c44626ada68ee3d8

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