Malicious PDF — malware analysis report

Static analysis result for SHA-256 22fa84a04822c844…

MALICIOUS

PDF

76.6 KB Created: 2021-05-04 01:28:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: b1d3253426628b6b01272bbdad4e2e1b SHA-1: b3f0708b408b078408e1ddba80247ebd883319cd SHA-256: 22fa84a04822c8448b4464b3df137f5f079fb2ce9e8faa227935658f4ed5e28a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file contains numerous external links, a technique often used for SEO poisoning or to redirect users to malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were extracted, the presence of many external links suggests the document's primary purpose is to lead users to compromised or malicious web content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/strik?utm_term=how+much+is+a+1950+singer+sewing+machine+worth PDF link annotation
    • http://bukuminuwakub.mypressonline.com/trumpet_voluntary_cambridge.pdfIn PDF document text
    • http://fanisore.sportsontheweb.net/zotumegivifu.pdfIn PDF document text
    • https://dimegowogox.weebly.com/uploads/1/3/3/9/133999821/b4db97.pdfIn PDF document text
    • http://xebupado.mypressonline.com/pdf_accessibility_checker_3._0.pdfIn PDF document text
    • http://nibumuxadata.66ghz.com/principles_of_geographical_information_systems.pdfIn PDF document text
    • https://tivifetanesa.weebly.com/uploads/1/3/5/3/135347176/22d9a7d.pdfIn PDF document text
    • https://dewubolisevibe.weebly.com/uploads/1/3/4/3/134318954/ba1f4e64593.pdfIn PDF document text
    • http://tuderoba.getenjoyment.net/acidosis_metabolica_tratamiento.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://275320ff-96dd-455a-9699-a0fdc58b27a5.filesusr.com/ugd/943725_361955090b0d432fb62537aa28b88658.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bifadiwuwileji/farming_simulator_2015_download_android.pdfIn PDF document text
    • https://4dcfe184-cd6c-48f8-9f23-5461c743a1d4.filesusr.com/ugd/cc8533_1d5d9ee6e54b423ebbbd5b64d71f4747.pdf?index=trueIn PDF document text
    • http://visunes.myartsonline.com/14923391414.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/armstrong_furnace_ignitor_canada.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/less_than_greater_than_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/polaris_office_user_guide.pdfIn PDF document text
    • http://talizojewebovob.rf.gd/commercial_invoice_template_uk_ups.pdfIn PDF document text
    • https://s3.amazonaws.com/tufitijinexu/12790737869.pdfIn PDF document text
    • https://df9240ce-57b4-430e-a582-521170ca5232.filesusr.com/ugd/10b03a_1568a83baa3e41ecbef0f7a59a50f404.pdf?index=trueIn PDF document text
    • http://xejarejunap.rf.gd/lodib.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_off0000ec8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC8C 5708 bytes
SHA-256: 201562a96bd3c8409ca3a0142652470729b55e9771a6dfb82b55764054014a9c
font_01_sfnt_off0000ffe7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFE7 10400 bytes
SHA-256: d83e8a22c9fbde83d1c513433e2d77d466c94d04c41206c5ddc6c99d13a248de

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