Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d8d265466fa5d03…

MALICIOUS

PDF

87.6 KB Created: 2021-03-18 05:32:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 9eef4361a9c67a706f0c8e70a99812fb SHA-1: 727393d310e72335213cde519bdbcd8e60beedcf SHA-256: 9d8d265466fa5d03b8dab82f838b6f7b87b5ee5d4f1225a4d2ee8ffb1eff9135
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs pointing to disposable domains, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains keywords related to 'power bi dashboard templates' and 'wkhtmltopdf', likely serving as a lure to disguise the malicious nature of the links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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://midufefew.ru/123?utm_term=power+bi+dashboard+templates+free PDF link annotation
    • http://lessonsonline.site/how_long_do_you_rotisserie_a_chicken_in_an_air_fryers98zv.pdfIn PDF document text
    • http://sidanixom.22web.org/98140743812.pdfIn PDF document text
    • http://fekosuse.getenjoyment.net/is_texting_ruining_your_writing_essay.pdfIn PDF document text
    • http://balifruit.com/alcatel_one_touch_flip_phone_resetzyo6j.pdfIn PDF document text
    • http://bajesiradevo.getenjoyment.net/tipos_de_anticorpos_e_suas_funes.pdfIn PDF document text
    • http://fuxakuzaporelu.iblogger.org/1445760774.pdfIn PDF document text
    • http://motarojetox.sportsontheweb.net/87799167467.pdfIn PDF document text
    • http://sadovik.me/pejagitunizipajab42tlj.pdfIn PDF document text
    • http://bathforlegs.xyz/segogerodasemd6j8.pdfIn PDF document text
    • http://contact-git.top/walibuse6jbo6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://24451074-f53b-4065-993c-779ba3957988.filesusr.com/ugd/0ae25f_1a88acd7984343beb2a0a38da8fce448.pdf?index=trueIn PDF document text
    • http://fuvogixerad.epizy.com/cadena_de_suministro_de_zara.pdfIn PDF document text
    • http://xolavozezimodan.onlinewebshop.net/calendario_liturgico_2020_descargar.pdfIn PDF document text
    • https://45dcde1a-aed5-4138-b95e-a0f768a283bf.filesusr.com/ugd/89441e_261b2ebe50614e0fb21e6c65e92fee90.pdf?index=trueIn PDF document text
    • https://aefb6378-f3ca-470a-b9d2-22936542d087.filesusr.com/ugd/fe129c_3e5ae9f26a5f475890fac235792efbdf.pdf?index=trueIn PDF document text
    • http://vuzuwukef.atwebpages.com/cairbar_schutel.pdfIn PDF document text
    • https://e301b21f-f707-426c-a094-6199d4b1a2d6.filesusr.com/ugd/f65518_bf768a8c53184f9a927a2dd934e8a7eb.pdf?index=trueIn PDF document text
    • https://590703a0-be71-4d3c-a49f-17767d5969ef.filesusr.com/ugd/656c20_cdfe3ebc72ca4cf5b9573f7e7b18db46.pdf?index=trueIn PDF document text
    • http://poxemibusap.epizy.com/mixed_ionic_and_covalent_naming_practice_answers.pdfIn PDF document text
    • https://9fb0fece-6c2a-4f8b-8ff1-5d9ea67f5ee7.filesusr.com/ugd/f6a907_66aae2f01ff34343ad6a74d87ef26391.pdf?index=trueIn 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_off0001153f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1153F 5512 bytes
SHA-256: 2e86773533ee725198b3693e9b7fef9c812155ceb45ef356eba2e2edeae43601
font_01_sfnt_off000127dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127DD 11740 bytes
SHA-256: 9aab6b5df2505faf730bed9fd7a98516ffc295c7100c4ac8866ba43c949dc328

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