Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2f93ebf82fddbf0…

MALICIOUS

PDF

61.5 KB Created: 2021-02-22 23:50:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 5b855172fea7caeb5611d648f74ab385 SHA-1: 066b1db2f7d6bf5f6d0df7223e06c61baad212b4 SHA-256: c2f93ebf82fddbf09ba44c8f1bba4f79689003f151190f119cbd065b6947f21e
126 Risk Score

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 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://jacksth.ru/wix?keyword=sand+art+game+unblocked PDF link annotation
    • http://waniwidolo.66ghz.com/bdo_enhancing_failstack_guide.pdfIn PDF document text
    • https://fowajenen.weebly.com/uploads/1/3/5/3/135329448/187260.pdfIn PDF document text
    • http://vusajefaf.iblogger.org/pexogokozulezelosiwex.pdfIn PDF document text
    • https://konilusikiwi.weebly.com/uploads/1/3/3/9/133986353/e6818.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403940/normal_5ff7a61a34ba7.pdfIn PDF document text
    • https://wufikaxom.weebly.com/uploads/1/3/4/8/134883002/58c6ae66f.pdfIn PDF document text
    • http://jetavimazi.22web.org/chris_brown_party_320kbps.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365570/normal_6010c8d2e4481.pdfIn PDF document text
    • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/3e112a0439d64.pdfIn PDF document text
    • https://gibegijatu.weebly.com/uploads/1/3/5/4/135400332/viruja.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383147/normal_5ff8a5cf9101d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fojupejededoto.epizy.com/hillsborough_county_school_report_card_schedule.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/jidaka.pdfIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/newevasalosibokugogarux.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_off0000b768.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB768 5388 bytes
SHA-256: c340a11e4a82995ca848d6e55e3aa4191b2798efd4d057784a78f2f7702de294
font_01_sfnt_off0000c9a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9A4 9344 bytes
SHA-256: 1547161e7047ad28c997392ff97c6efb63ccbfe93e18764cb282674a498e2788