Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8113b147332f234…

MALICIOUS

PDF

68.4 KB Created: 2021-03-17 10:30:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b78aa32fbd2addfc9fc717abe752c7a0 SHA-1: 02ead626d362b3285342f75b6be5fbdd5cd736d4 SHA-256: b8113b147332f2340c6c8ad86e6b6303b3e8eb7a66512286f4d3dbc2665b6881
186 Risk Score

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://jottigo.ru/award?keyword=signos+y+sintomas+de+cardiopatia+isquemica+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4401558/normal_5fcaf30c290cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475559/normal_60126507221b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369794/normal_6011ce45aa83b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379483/normal_601fe48e6f6b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488349/normal_6010a9844452b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451348/normal_5fdff4bf22735.pdfIn PDF document text
    • https://nusazipupuw.weebly.com/uploads/1/3/4/0/134042511/0d660acef2a0.pdfIn PDF document text
    • https://razezoxuwen.weebly.com/uploads/1/3/1/4/131453099/318ed63466f8ae.pdfIn PDF document text
    • https://vidimepimexuja.weebly.com/uploads/1/3/4/6/134626803/a9b139ddb1.pdfIn PDF document text
    • https://zokelafeg.weebly.com/uploads/1/3/4/8/134889419/bujifixivo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450519/normal_5ff8dcf700a33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445104/normal_6021538823a65.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414334/normal_603e0a454a466.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459182/normal_5ff13441f1585.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d12d056d-c16f-42d2-bb36-b12dbd13f8e5.filesusr.com/ugd/a2005d_2b3458cf0785421182805902592171e6.pdf?index=trueIn PDF document text
    • https://ec8c99fd-5413-4e38-b6a0-2ccbba71fc6f.filesusr.com/ugd/de02f3_30e4c6b80eeb4cfcb0df2c388571ff5b.pdf?index=trueIn PDF document text
    • http://kidejuwukaj.epizy.com/tagejazanotigejikukozupu.pdfIn PDF document text
    • https://951e66c5-660f-4748-bfcc-a6cc0831133d.filesusr.com/ugd/4967bb_553bdc5225d3491fb5938055ee785678.pdf?index=trueIn PDF document text
    • http://ripifozuj.rf.gd/andrew_wiggins_scouting_report_espn.pdfIn PDF document text
    • http://migotugiwuzefez.epizy.com/72769729794.pdfIn PDF document text
    • https://cf587a47-7c2f-4f55-8bbb-21a4c73503f7.filesusr.com/ugd/8ea597_2bac0b22041942e8a42c4a9e51440a36.pdf?index=trueIn PDF document text
    • https://ddb1515c-011f-4d6c-9a6c-b305a2039a85.filesusr.com/ugd/477ac5_88f0cfe95da746feb832bf3b5b242c75.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_off0000ce64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE64 5772 bytes
SHA-256: 4dceae87cab3a0b348dbd91fab32f280f08f798914e61526c62af5c36ab08f43
font_01_sfnt_off0000e1fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1FB 9776 bytes
SHA-256: 2911fa3b59dc43101f3656f4027eef9fd771ff39c6f091177f2abb22a568ed2d