Malicious PDF — malware analysis report

Static analysis result for SHA-256 277194af4ac43ff4…

MALICIOUS

PDF

72.0 KB Created: 2021-03-24 06:04:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 7a2013ff38a052ae68b1b0696b9275ba SHA-1: 320ff30c02a6fcfa38e71c2bef9aa52aa84265e8 SHA-256: 277194af4ac43ff4e61e854fc8c5e82d56bbd677b9ba69a31c431a2cfa01d51d
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a large number of external links, with one pointing to mezovuduw.ru, suggesting a link farm or phishing attempt. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent, likely to redirect users to harmful content or phishing sites.

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://mezovuduw.ru/wix?keyword=rival+frozen+delights+snow+cone+maker+directions PDF link annotation
    • https://zunimivivonuz.weebly.com/uploads/1/3/4/0/134017399/6af1cdcc254.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383170/normal_5fcf988cd2370.pdfIn PDF document text
    • http://www19216801.site/sejunejevewijukove1k9w7.pdfIn PDF document text
    • http://all-system7.club/gojiwaxomanesetedorlzgny.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478670/normal_5fe52fba60f1f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382193/normal_5fec9d056a8d2.pdfIn PDF document text
    • https://kazeroxunixon.weebly.com/uploads/1/3/4/8/134885145/9559920.pdfIn PDF document text
    • http://power-guard.shop/brother_dcp7065dn_pricem4201.pdfIn PDF document text
    • https://mepotogi.weebly.com/uploads/1/3/4/7/134737672/fa917.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403117/normal_6049934fd3cd2.pdfIn PDF document text
    • http://znakomstva18x.site/algebra_word_problems_worksheetpk3th.pdfIn PDF document text
    • http://karnaval.host/61482563454b0phj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492901/normal_6054b06933bab.pdfIn PDF document text
    • https://vigajinid.weebly.com/uploads/1/3/4/8/134889024/c21e22c.pdfIn PDF document text
    • http://bnatural.space/kipanudute4k9yt.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/wudibirewuduto/what_does_the_bible_say_about_rightly_dividing_the_word_of_truth.pdfIn PDF document text
    • https://s3.amazonaws.com/widuxade/cisco_catalyst_3750g_series_poe-_24_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/81257167398.pdfIn PDF document text
    • https://s3.amazonaws.com/kudefem/hyderabad_university_entrance_exam_answer_key_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/calendario_2020_marbaro.pdfIn PDF document text
    • https://s3.amazonaws.com/fonazuzixagizir/hospital_management_system_project_template.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/nanuruvada.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_off0000d9ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9AD 5708 bytes
SHA-256: d3b926f8b46efb8463938042a706d85392389e8e4545bb8e5d90f42caae667a8
font_01_sfnt_off0000ed18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED18 11000 bytes
SHA-256: 6a298cfbdff981a525d1e7e556292336332b542a838df00ee13af4ac31818baf

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