Malicious PDF — malware analysis report

Static analysis result for SHA-256 fae6d3e11b10957f…

MALICIOUS

PDF

72.9 KB Created: 2021-02-21 02:05:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 5441145549fc389c34675e569de24cd7 SHA-1: a7049f5aea8ac92faa50fc879785e0312c7a9174 SHA-256: fae6d3e11b10957f3d92e41140a5b020a5e580ce90969f36068c6706a2143ed6
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/aws?utm_term=samsung+s9+plus+specs+and+price+philippines+2020 In PDF document text
    • https://cdn.sqhk.co/baxotonad/fhiSZxz/lodowikonasujurebaxiv.pdfIn PDF document text
    • https://latobebesat.weebly.com/uploads/1/3/5/9/135993630/6716404.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386620/normal_5ff98a3182119.pdfIn PDF document text
    • https://dezamemev.weebly.com/uploads/1/3/4/7/134746632/87014ffb9.pdfIn PDF document text
    • http://tvoeobrazovanie.fun/best_star_map_for_ipad_free2pi52.pdfIn PDF document text
    • http://igcopyrightverify.com/official_farkle_rulesa0akx.pdfIn PDF document text
    • https://cdn.sqhk.co/sewadokoka/bjgjeMI/64298076965.pdfIn PDF document text
    • https://cdn.sqhk.co/rolileduvof/cjfj2gi/37630573210.pdfIn PDF document text
    • https://cdn.sqhk.co/tebefaravuz/iiblhea/wefujefutekegodovizani.pdfIn PDF document text
    • https://cdn.sqhk.co/sedazozesufu/hjyidNC/absorption_rate_definition_nutrition.pdfIn PDF document text
    • http://triple-doska6.club/55636484146ghydo.pdfIn PDF document text
    • https://cdn.sqhk.co/rufebumu/dxibCCs/new_york_city_guidelines_for_reopening.pdfIn PDF document text
    • http://tgesheff.xyz/ates_ve_su_2_oyunu_indir_gezginlerqcv2v.pdfIn PDF document text
    • https://bewizujire.weebly.com/uploads/1/3/2/3/132303264/sobutabemotud_wofukuwumatami_zaluv.pdfIn PDF document text
    • http://coolmag.biz/kusogumaxenjv3i1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d89b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD89B 6020 bytes
SHA-256: d7cb0148fbfee08b5c78f95a45210107aace32a4d354fd7c45382d8fff21d09e
font_01_sfnt_off0000ece4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECE4 12604 bytes
SHA-256: e826f79827e49b35319550f5c08554620d76327e639764d931f3c0e66da1ab7e

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