Malicious PDF — malware analysis report

Static analysis result for SHA-256 545db5b3edc4736d…

MALICIOUS

PDF

70.4 KB Created: 2021-02-22 18:28:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 67ff416aab696825a8b9cb62bde6c57d SHA-1: 8412803854bc62dc609c69c66fab7eaa391964af SHA-256: 545db5b3edc4736d8ac618f2c4b3ed76b8b5397bef5423ac34ef3a4c0a9375c2
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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/wix?keyword=yamaha+banshee+manual PDF link annotation
    • https://senugosuka.weebly.com/uploads/1/3/1/4/131454109/werizakugu.pdfIn PDF document text
    • https://rosanibo.weebly.com/uploads/1/3/4/8/134873488/zaridedik_tuzaju_futaduxajagodib.pdfIn PDF document text
    • https://kevifuzokidoku.weebly.com/uploads/1/3/5/3/135310888/3384484.pdfIn PDF document text
    • http://instasurprise.online/lonugabozeud5ps.pdfIn PDF document text
    • http://affilateapp.online/94703091037xijpb.pdfIn PDF document text
    • https://zutuwukesid.weebly.com/uploads/1/3/4/6/134624341/xexatazitoz.pdfIn PDF document text
    • https://jinumajot.weebly.com/uploads/1/3/1/4/131409926/zawopikalenar_regex.pdfIn PDF document text
    • https://fedusinejedutim.weebly.com/uploads/1/3/4/0/134040989/5288986.pdfIn PDF document text
    • http://okrasote.info/gugerumozaxoralodovubebl4ll.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462036/normal_5fcf0246d3b44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503524/normal_602267f1b6652.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473971/normal_5fce5072e4ba6.pdfIn PDF document text
    • https://cdn.sqhk.co/bemovunilupo/cid7Jgj/dososewotipa.pdfIn PDF document text
    • http://prazdnikprosto.ru/molar_volume_of_hydrogen_pre_lab_answerso54ij.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470526/normal_600e3a7357c76.pdfIn PDF document text
    • https://laregupofonel.weebly.com/uploads/1/3/4/4/134464195/6780525.pdfIn PDF document text
    • https://popagupo.weebly.com/uploads/1/3/1/4/131407300/12702bf05313fbb.pdfIn PDF document text
    • https://wujipiledulom.weebly.com/uploads/1/3/4/6/134695719/nodobix_junez_xaduxosup_dujulizegulawi.pdfIn PDF document text
    • https://cdn.sqhk.co/niserutom/icggOm6/79177122376.pdfIn PDF document text
    • https://cdn.sqhk.co/maxevurux/dghOXz9/25620577625.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379615/normal_5ff25a28196c3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://zulonojaminipe.rf.gd/appendix_5b_in_word_format.pdfIn PDF document text
    • http://kititone.epizy.com/java_7._23.pdfIn PDF document text
    • http://vimitafukufes.rf.gd/25764272550.pdfIn PDF document text
    • http://dixolasafu.epizy.com/chord_progression_midi_files_s.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD24 4576 bytes
SHA-256: 981bad64128a2499392c377fb807a3713b4afa76096824557002ed0ed2d37b40
font_01_sfnt_off0000dc75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC75 9716 bytes
SHA-256: 70ead45fe6281ce5fc4101b1dfec34222dd6798c1e4ce95ea05ef5648005a260
font_02_sfnt_off0000fdb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDB8 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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