Malicious PDF — malware analysis report

Static analysis result for SHA-256 449603eb2cb3822d…

MALICIOUS

PDF

72.9 KB Created: 2021-03-01 08:14:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c00ba38ef18ec59538fa248e67136022 SHA-1: 9c2173ce84d82f8cb67648dc15ab4f6545c48bc1 SHA-256: 449603eb2cb3822d4f899c6894191ca311127b524b40817c4f257250ce4aa945
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://golowaki.ru/award?keyword=nato+phonetic+alphabet+quiz+questions PDF link annotation
    • http://fejekadiwoxobiz.getenjoyment.net/bemaratiwof.pdfIn PDF document text
    • https://xuwupeloz.weebly.com/uploads/1/3/4/7/134734270/dabuwinupubutud-vasoxaxepagepuz.pdfIn PDF document text
    • https://wapaberupuz.weebly.com/uploads/1/3/5/3/135397773/1936597.pdfIn PDF document text
    • http://nejupike.mygamesonline.org/59038203670.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407724/normal_6003623222b7e.pdfIn PDF document text
    • http://jikusofare.mywebcommunity.org/tamorekugemikefaxukimekaw.pdfIn PDF document text
    • http://tibetterrier.ru/fanofajuselafaleginisopnydsr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454671/normal_601b7caa3fb48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486350/normal_601e13d6bc113.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459329/normal_602904235817f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373264/normal_60175ee9a02bf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372719/normal_6004e6c287bc4.pdfIn PDF document text
    • https://binigikuvoloxog.weebly.com/uploads/1/3/5/3/135332024/wadudi.pdfIn PDF document text
    • http://jenerotisa.mywebcommunity.org/what_does_moca_score_of_13_mean.pdfIn PDF document text
    • http://mobeditobaxul.scienceontheweb.net/36611071028.pdfIn PDF document text
    • https://moxuronanupew.weebly.com/uploads/1/3/4/5/134597487/4889787.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bujekotu.atwebpages.com/what_is_audience_in_creative_writing.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_off0000e0da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0DA 5208 bytes
SHA-256: e84e560ccc639820e9c0ff96f847d9a27174903020cb370a14c06dd489f6c3c4
font_01_sfnt_off0000f29c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF29C 10608 bytes
SHA-256: 24e9a209d3383452a7d6caa18eb681c7efa1ba3a4e8b291386bd024ffae137d3

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