Malicious PDF — malware analysis report

Static analysis result for SHA-256 be853dc62d269306…

MALICIOUS

PDF

77.6 KB Created: 2021-05-06 23:50:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: eb90739e11ae01baee0e880804f994f8 SHA-1: 238cad7ec8e15678b2cfdc08fb747df2edb39c8b SHA-256: be853dc62d269306321dfe8f24f65c9f412111419fb385c3a92a90c45d711a28
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. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing attempt. One of the embedded URIs, 'https://maypoin.ru/strik?utm_term=how+to+control+emerson+tv+without+remote', is likely part of this malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/strik?utm_term=how+to+control+emerson+tv+without+remote PDF link annotation
    • http://sport-stavki.fun/mozifilizujuranikepurujihk9.pdfIn PDF document text
    • https://rirusiwox.weebly.com/uploads/1/3/4/2/134265342/c93ae54feb175.pdfIn PDF document text
    • https://derigogo.weebly.com/uploads/1/3/4/0/134017063/navovekir.pdfIn PDF document text
    • https://zogefiwodojur.weebly.com/uploads/1/3/4/3/134310711/0433119.pdfIn PDF document text
    • http://about-igsupport.com/93831553949q3zru.pdfIn PDF document text
    • http://papasewavixuk.22web.org/beany_block_drainage_design_guide.pdfIn PDF document text
    • https://lazumuron.weebly.com/uploads/1/3/4/8/134863931/9827446.pdfIn PDF document text
    • http://zoferili.22web.org/jegazaseletefir.pdfIn PDF document text
    • http://larts.digital/interracial_romance_books4tnlc.pdfIn PDF document text
    • https://xemibunadagom.weebly.com/uploads/1/3/4/6/134639404/3661676.pdfIn PDF document text
    • https://riwozetamozu.weebly.com/uploads/1/3/4/3/134331456/8058311.pdfIn PDF document text
    • http://winefesa.22web.org/nixopem.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://297de083-771a-4730-a3b8-a2afe8c7d209.filesusr.com/ugd/47424f_5632d0ada95d459983e5dfb1a0221a25.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f809753e-ce47-478d-81cc-5c53577f97a4/gevurazalan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1418db58-3642-404e-91f4-e759878ead94/33631595937.pdfIn PDF document text
    • https://8772a198-af03-49ef-8724-5feb7546cb8a.filesusr.com/ugd/436f04_523e38abe14641d4a100915577ae1e76.pdf?index=trueIn PDF document text
    • https://8b5ac0f3-2bc4-49a6-9a99-2541af31b215.filesusr.com/ugd/f2ef67_c33e12392a45469582ee343377388144.pdf?index=trueIn PDF document text
    • https://8eccd3b7-fb20-4588-a5b5-4d8c58591879.filesusr.com/ugd/0e6328_9791d0dbc1444f5c952c709ac6549735.pdf?index=trueIn PDF document text
    • http://zanatibagewo.rf.gd/aptransco_ae_notification_2020_download.pdfIn PDF document text
    • http://pedulakumi.rf.gd/analtica_web_2._0_avinash_kaushik_espaol_gratis.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_off0000efd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFD7 4944 bytes
SHA-256: 05ca2f33fd75f68312b682f86e45ea0291ea4d644e25d36ca68456a049634597
font_01_sfnt_off00010095.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10095 11260 bytes
SHA-256: fd2ff5a5d4fd5bd821f2f7143e898bd31ef629a8cf42e8fc05002dd499345903

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