Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bee3263591b3800…

MALICIOUS

PDF

77.0 KB Created: 2021-03-04 21:21:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: c2e040197c339f7448e9f08bc6cb2c2e SHA-1: 182b809f3b3c073fb1b720b78361279f5b1b40f0 SHA-256: 6bee3263591b38007dfffcda17b8c24bc3b20bbd935002fcee9a0995e4c688ff
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://leonvi.ru/award?keyword=what+happens+when+you+eat+wheat+after+being+gluten+free PDF link annotation
    • http://bumawusuka.mypressonline.com/lazarillo_de_tormes_english.pdfIn PDF document text
    • http://kolagozisil.mywebcommunity.org/71251025751.pdfIn PDF document text
    • http://xilenemivagola.mywebcommunity.org/41185541547.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456728/normal_603d3c3b8daa5.pdfIn PDF document text
    • https://bovuzujavus.weebly.com/uploads/1/3/5/3/135326818/8b29a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456143/normal_5fd8be1ea0d4b.pdfIn PDF document text
    • http://kagaromorin.medianewsonline.com/how_to_lie_with_statistics_summary_chapter_by_chapter_examples.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366063/normal_602fd786afeec.pdfIn PDF document text
    • http://kunujunekedi.mygamesonline.org/rozumo.pdfIn PDF document text
    • http://wemuwetafivaxe.sportsontheweb.net/river_flows_in_you_guitar_tab_gp5.pdfIn PDF document text
    • https://vafukomoruf.weebly.com/uploads/1/3/4/8/134862603/sawumariribolo_dogoxejerixote.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kiwopusafize/62714253371.pdfIn PDF document text
    • https://73af689e-4c80-4f62-99d3-7a886641ad81.filesusr.com/ugd/3b5dd9_60b9781a4e174aa085fdf1923a50192c.pdf?index=trueIn PDF document text
    • https://0a3c8164-ddd9-4522-8472-457ce31ece15.filesusr.com/ugd/d32f78_555835842f6e469e8fe3b8164e77961e.pdf?index=trueIn PDF document text
    • https://9e730ba1-499c-413e-9a09-8a81f8121270.filesusr.com/ugd/0a0016_21a4fdfc19494e2fa13038e31b19e23e.pdf?index=trueIn PDF document text
    • https://31c8a3d4-0132-49f1-a04f-09c79d03e01f.filesusr.com/ugd/a4da84_5d16697423ef4a3d985f75d65d87965e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dixaleko/13982517028.pdfIn PDF document text
    • https://2a082fd4-e93f-4b8e-9e59-408fa046b31c.filesusr.com/ugd/e334dd_08b149a6e614402db0b5561b2eda35da.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_off0000f072.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF072 5508 bytes
SHA-256: 8964c76e387c5afacefc5b96254da8e291adfaca9cfe41c194c0b91e50583f63
font_01_sfnt_off00010348.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10348 10316 bytes
SHA-256: 52e36aef38a5a911b432bf9e3e9c8aa11eb803f0a81feba219729db04b70daa6

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