Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b54265200582205…

MALICIOUS

PDF

80.8 KB Created: 2021-09-21 16:12:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 33d9b2c7c47667677a497b871fc5ffa6 SHA-1: 842b8abe7c1b4cb41b29c4458611c8c6a774d73e SHA-256: 8b54265200582205ed5101cc6e6f9ad6ff8144b03d7d402578a401b4880254a9
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://wastran.ru/uplcv?utm_term=tubemate+lite+apk+download PDF link annotation
    • http://www.grundys.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1614137906d54d---89362630606.pdfIn PDF document text
    • http://rmgoals.com/userfiles/files/16607487351.pdfIn PDF document text
    • https://priscar.com/documents/files/rerufoxikalixinikudawevup.pdfIn PDF document text
    • http://tongkhomica.com/upload/files/45591148297.pdfIn PDF document text
    • http://swaving-stalinrichting.nl/ckfinder/userfiles/files/jegadumifujewun.pdfIn PDF document text
    • https://lemarko.com/userfiles/file/6734102630.pdfIn PDF document text
    • http://uro-medical.pl/zdjecia/fotki/file/82727959686.pdfIn PDF document text
    • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16137dfac7ca86---sudejukupuzokobek.pdfIn PDF document text
    • http://jikaramen.com/uploads/files/rovuvakop.pdfIn PDF document text
    • https://luckyfood.itweald.com/uploads/files/613977c60a29b.pdfIn PDF document text
    • https://mikludava.lt/images/files/togagulekageborewaxidosu.pdfIn PDF document text
    • http://isotope3.pm-ural.com/uploads/files/fusavixiweluzubomorube.pdfIn PDF document text
    • http://myblindz.com/fck_user_files/file/kejewudujagaxadegijib.pdfIn PDF document text
    • http://specialcats.nl/media/files/42120072526.pdfIn PDF document text
    • https://heuresromantiques.com/upload/files/46132521315.pdfIn PDF document text
    • http://singer-island-condos.com/userfiles/files/92839412606.pdfIn PDF document text
    • http://www.tlo.ntou.edu.tw/ckfinder/userfiles/files/besegusorafilozitopuz.pdfIn PDF document text
    • http://yakutiaprime.ru/SITE/files/editor/file/buvovabopozufeme.pdfIn PDF document text
    • http://yangpupark.com/uploadfile/files/3980789746.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_off0000d723.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD723 10664 bytes
SHA-256: 95b6c2080bbe136d07049f31d429e394b5db5045bba4420a34e0c317b64c9685
font_01_sfnt_off0000ef56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF56 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010768.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10768 18140 bytes
SHA-256: e1f6cd2aa214c6f1ef3f81817c0bd3a9e78b9204121a862011202a6be4a75e9e