Malicious PDF — malware analysis report

Static analysis result for SHA-256 82f2f6a17db3c841…

MALICIOUS

PDF

72.9 KB Created: 2021-02-16 10:40:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0778e18ccf9a585cbaf04763173528b6 SHA-1: c7de8dd00c20162bafdd05c2a4cf3793b6edaf7f SHA-256: 82f2f6a17db3c841851d080f348947fc5a949b3398319e6732dade761ba0c137
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/wb?keyword=what%20type%20of%20tankless%20water%20heater%20is%20best PDF link annotation
    • https://pixadodo.weebly.com/uploads/1/3/2/7/132740612/tuzamemukaziroxipesa.pdfIn PDF document text
    • http://dovulup.iblogger.org/calendar_2019_malayalam.pdfIn PDF document text
    • https://pimidunobesuxig.weebly.com/uploads/1/3/0/9/130970022/6583123.pdfIn PDF document text
    • https://sixagezox.weebly.com/uploads/1/3/1/6/131606695/1493269.pdfIn PDF document text
    • https://penukigoguni.weebly.com/uploads/1/3/1/6/131606127/3970985.pdfIn PDF document text
    • http://fevalugumaj.22web.org/10450751108.pdfIn PDF document text
    • https://jinikegubu.weebly.com/uploads/1/3/4/8/134873825/4693b0381.pdfIn PDF document text
    • https://nerukime.weebly.com/uploads/1/3/1/3/131379394/6923029.pdfIn PDF document text
    • https://mibivatoroxup.weebly.com/uploads/1/3/4/7/134762409/412547a3.pdfIn PDF document text
    • https://cdn.sqhk.co/fovuxugo/dhgbifE/neutralizer_definition_biology.pdfIn PDF document text
    • https://cdn.sqhk.co/vuwibagula/QjiXYOp/xibobujalifofa.pdfIn PDF document text
    • https://vinovubetiloj.weebly.com/uploads/1/3/4/6/134679092/fulameruxal.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zilajib.epizy.com/40983215920.pdfIn PDF document text
    • http://webemorukosor.epizy.com/47679279896.pdfIn PDF document text
    • http://wosaxadef.rf.gd/genital_herpes_in_pregnancy_nice_guidelines.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_off0000e059.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE059 5400 bytes
SHA-256: 22827e84e2f856439c7e1ab439fc3e8ca17de328c8c58b67022c37617c937818
font_01_sfnt_off0000f2cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2CF 10532 bytes
SHA-256: 9a68b8e41f89ea8aa64834b024d835e9b7f3f1e9488ad09b79500bf0a74b7115