Malicious PDF — malware analysis report

Static analysis result for SHA-256 0aa6dbd8d3ff5a06…

MALICIOUS

PDF

76.1 KB Created: 2021-09-13 13:27:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: c3eaec368450fc3586a415d7bf2fc66d SHA-1: 539df8fa6948b3b71af9d4e686afe3ce148fda54 SHA-256: 0aa6dbd8d3ff5a0662f904a025e0b0a17adef6b5e0bbaff9533f3651d31c957e
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://coretry.ru/uplcv?utm_term=mod+menu+for+cod+mobile+android PDF link annotation
    • http://madinagirls.com/easydo%20v2.00/files/uploads/losojowosisiv.pdfIn PDF document text
    • http://strahyi.ru/images/file/48854355956.pdfIn PDF document text
    • https://resulgame.com/calisma2/files/uploads/60755991090.pdfIn PDF document text
    • http://xn--3bsx3iw22bmot.com/filespath/files/20210904125136.pdfIn PDF document text
    • http://weifong.tw/fckimages/file/8062676591.pdfIn PDF document text
    • http://permanentnimakeup-brno.cz/userfiles/files/kadivefed.pdfIn PDF document text
    • http://geologicatoscana.eu/userfiles/files/83078426943.pdfIn PDF document text
    • http://ladispensadicampagna.it/uploads/assets/file/28446272458.pdfIn PDF document text
    • https://easternresources.net/ckfinder/userfiles/files/67612260241.pdfIn PDF document text
    • http://wsp.pl/userfiles/file/zuzipodejegepedes.pdfIn PDF document text
    • https://vivaldiroberto.com/img/files/mediafiles/file/49572639251.pdfIn PDF document text
    • https://pmeds.us/userfiles/file/jisufonaxunivo.pdfIn PDF document text
    • https://insinkerator.us/images/uploaded/file/jufolepoxifufeva.pdfIn PDF document text
    • http://kingswaytyres.com/project/kingsway/uploads/file/jonukap.pdfIn PDF document text
    • http://transporteslaplata.com/imagenes_web/file/57690763870.pdfIn PDF document text
    • https://karlschool.org/uploads/files/202109030951162245.pdfIn PDF document text
    • http://acecaalcoy.com/userfiles/file/5996273685.pdfIn PDF document text
    • https://kolkatanagariksammelan.org/ckfinder/userfiles/files/8566739705.pdfIn PDF document text
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d24e1b9078---gexepikuxazaxide.pdfIn PDF document text
    • https://festival.bg/fckeditorfiles/file/borosapaxemovimifexodoso.pdfIn PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1613895ae657d6---sireg.pdfIn PDF document text
    • http://csc0311.com/userfiles/file/20210913001049_sl7bdy.pdfIn PDF document text
    • http://k12kos.com/ckfinder/userfiles/files/76658962390.pdfIn PDF document text
    • https://rajaunited.com/contents/files/41214096899.pdfIn PDF document text
    • https://takarasushimn.com/userfiles/files/xakudunofoxov.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c438.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC438 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000dc4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC4F 10604 bytes
SHA-256: ffc4e70cc311e6ce98ffaef64e6cdf36051186a762bd8f7186b2e35b7a664b55
font_02_sfnt_off0000f46c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF46C 17756 bytes
SHA-256: a852e024bba825690bb4333d08e780687545520ce3c7e866f1435c929d57ed51

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