Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffe7ec99568140d9…

MALICIOUS

PDF

68.1 KB Created: 2020-12-20 12:58:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: cb84e749e25836fb352e7858f10d7436 SHA-1: 5ff1b18e5d987d3971d1e7cc7a1e24b45c3462a1 SHA-256: ffe7ec99568140d9bc2953cdbc3bc18a47786a87f96fb300118ab453acb5607a
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://trafffi.ru/aws?utm_term=her2+positive+breast+cancer+treatment+guidelines+2018 PDF link annotation
    • https://guvolobojifo.weebly.com/uploads/1/3/4/7/134733869/venutajuvofijed.pdfIn PDF document text
    • https://selokifasafu.weebly.com/uploads/1/3/4/3/134383977/257d725c5d5ac40.pdfIn PDF document text
    • https://gadigode.weebly.com/uploads/1/3/2/6/132680949/902104.pdfIn PDF document text
    • https://mibigadoguful.weebly.com/uploads/1/3/4/7/134759919/rugelimoxefoxi.pdfIn PDF document text
    • https://xososikanezav.weebly.com/uploads/1/3/4/8/134892973/8827546.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490129/normal_5fc6f072dd758.pdfIn PDF document text
    • https://pakoverixofe.weebly.com/uploads/1/3/4/7/134771358/1441413.pdfIn PDF document text
    • https://kobigaxa.weebly.com/uploads/1/3/3/9/133997295/derevolawonoj_buvasi_surixiw.pdfIn PDF document text
    • https://lenapejasuma.weebly.com/uploads/1/3/4/7/134749539/vaduzikax.pdfIn PDF document text
    • https://numilobes.weebly.com/uploads/1/3/4/2/134235742/bazamorevek_lufudawoluvus_zujigo_fenobikukuku.pdfIn PDF document text
    • https://zowadadevifu.weebly.com/uploads/1/3/4/5/134597758/a443eb03905a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc0dda31452f90b7fe53205/t/5fc1489ba97599144e26eae8/1606502569192/jedugolomu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc00a03c6229360eca839ab/t/5fc114a8a97599144e1d9b22/1606489271561/final_fantasy_vii_materia_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7b973717a0f60c4053b44/t/5fd0591fab2d482295dc06ec/1607489827724/kaloduz.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4bfbf403f5353fdae5828/t/5fc64b71a97599144ecf709a/1606830962062/mipavoxikatakaxolulowafe.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_off0000ccf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCF7 6072 bytes
SHA-256: 6a4f6cd943badfc893ca067c84bad783e112ae514bda56900b23881a7bf2fd99
font_01_sfnt_off0000e187.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE187 9824 bytes
SHA-256: d91f9d8d33116c3163b4a00a6a9c6f970371844fd0383769c54c3da7ac97de08

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