Malicious PDF — malware analysis report

Static analysis result for SHA-256 50038afe363813b2…

MALICIOUS

PDF

68.4 KB Created: 2021-02-20 23:42:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a4ac7e1edfc72700fd25c4c90ded65f5 SHA-1: 4fac9d4a1d4704b8cc6d62ccea160e2c51f6ed67 SHA-256: 50038afe363813b28b87a14e7dac654f1778181c601a1335a967c0f8df6b8137
186 Risk Score

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://jacksth.ru/wix?keyword=unit+8+circle+geometry+test+answers PDF link annotation
    • https://semanipiji.weebly.com/uploads/1/3/5/3/135312460/muzitiloveviboro.pdfIn PDF document text
    • https://cdn.sqhk.co/nawovoso/gfwCibZ/facebook_business_manager_tutorial_deutsch.pdfIn PDF document text
    • https://vaxokivov.weebly.com/uploads/1/3/1/4/131453734/mabalegusibalovoku.pdfIn PDF document text
    • https://supadebev.weebly.com/uploads/1/3/2/7/132712355/tubalip.pdfIn PDF document text
    • http://bcpreactiva-enlinea.com/barovkmmfa.pdfIn PDF document text
    • http://stalekost.site/diwokusaxop1dpjq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368736/normal_601915b73b868.pdfIn PDF document text
    • https://goresizusozal.weebly.com/uploads/1/3/4/5/134524816/6779788.pdfIn PDF document text
    • https://cdn.sqhk.co/pixorikibam/KwShjhf/islamic_ringtones_and_songs_2020_free_download.pdfIn PDF document text
    • http://esclick.pro/zevopupavifakowumeve5bxlb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416154/normal_5fe51df2d890f.pdfIn PDF document text
    • https://cdn.sqhk.co/gisepavuv/gjgiMhi/66473433976.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488592/normal_602461ae43fc9.pdfIn PDF document text
    • http://ipai.online/284155643114gzem.pdfIn PDF document text
    • https://gagakulusete.weebly.com/uploads/1/3/5/3/135326625/5572093.pdfIn PDF document text
    • https://mavitebe.weebly.com/uploads/1/3/1/1/131163983/7109209.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390684/normal_60069e958b29a.pdfIn PDF document text
    • https://cdn.sqhk.co/naketego/jahjRgc/26133812973.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xurorovesi.epizy.com/nunexaxijojalafumesove.pdfIn PDF document text
    • http://dabesajunelazul.rf.gd/drug_metabolism_free.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_off0000cfe9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFE9 5500 bytes
SHA-256: 935be838267ef58fc3fda349693cabdea3b6b93ebe6300afde0aa0535964cf85
font_01_sfnt_off0000e298.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE298 9988 bytes
SHA-256: f0526d98175e237ac4dc9dd565cec6f2db4b047be9a6b796d5074880998df907

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