Malicious PDF — malware analysis report

Static analysis result for SHA-256 a51e8d4974ff7b63…

MALICIOUS

PDF

72.1 KB Created: 2021-02-28 22:49:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6883aa320b17f590dab5878b8ea00c29 SHA-1: 702ac2b13765edb04fa680073d159c739fee45b5 SHA-256: a51e8d4974ff7b6316064c76f14a7078ccd5bdf3987b3445446cc859a3bbd288
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://gimoguvi.ru/award?keyword=how+to+cut+dovetail+joints+with+a+router PDF link annotation
    • http://lofajemami.sportsontheweb.net/pudupavepokukoworaten.pdfIn PDF document text
    • http://lazategomid.scienceontheweb.net/how_to_make_a_schematic_file_in_minecraft.pdfIn PDF document text
    • https://fukituxepuronip.weebly.com/uploads/1/3/4/6/134605821/vujibibenugosejuduz.pdfIn PDF document text
    • https://logazimakopaw.weebly.com/uploads/1/3/4/3/134399250/9385714.pdfIn PDF document text
    • http://erkutungotu.com/7672124527596989.pdfIn PDF document text
    • https://wokulenazaxur.weebly.com/uploads/1/3/4/7/134744474/fajovotakenu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383577/normal_5fcf990fd44fd.pdfIn PDF document text
    • https://japipimimobuxi.weebly.com/uploads/1/3/1/0/131071183/mojuk-xabawunof.pdfIn PDF document text
    • http://zarabotok.space/tewepujivijizagpi5z.pdfIn PDF document text
    • http://trastenmyqort.online/nimaduxibotunokakitkt22t.pdfIn PDF document text
    • http://yesnutural.space/risk_assessment_template_for_software_developmentcuj1u.pdfIn PDF document text
    • https://buvapubadoloj.weebly.com/uploads/1/3/4/2/134265521/goxinotinowex.pdfIn PDF document text
    • http://jorowijedo.mywebcommunity.org/how_long_do_you_charge_simplehuman_mirror.pdfIn PDF document text
    • http://clientbluebadge.com/19282612418woj53.pdfIn PDF document text
    • https://vunorizuwuxina.weebly.com/uploads/1/3/0/7/130774993/3839372.pdfIn PDF document text
    • http://playmarket-online.com/new_moon_october_2020_spiritual_meaning3q3hf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zutugidod.onlinewebshop.net/kipemamizakojetugexogedi.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_off0000de77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE77 5216 bytes
SHA-256: b1c7bc191539ea4a634f923b89df297394874a0aae2d8be36f917f440a375295
font_01_sfnt_off0000f041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF041 10148 bytes
SHA-256: 18d55b2d6e3d0faa7fb1bb3f549e8806733bb2e3db8f0d388be7fb8bb99a9896