Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d982d5b31b7c7bf…

MALICIOUS

PDF

84.1 KB Created: 2021-09-16 05:34:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: feb3910e04729ac34735d738672fc76d SHA-1: ccf1a9ecf515b97a3f39e2c2c4e0292b561714fa SHA-256: 6d982d5b31b7c7bf9e24f369eeda333175ce2780b52e28267b8d0bbdc8a349ba
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to disposable hosting and form a link farm, suggesting a phishing or redirection attempt. The document body is heavily obfuscated and unreadable, but the presence of embedded URLs and the heuristic findings strongly indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/161330caed5e37---99351868281.pdf In PDF document text
    • http://mediaworld.pro/ckfinder/userfiles/files/davufikuluxisobunako.pdfIn PDF document text
    • http://fteq.ru/files/file/6046019149.pdfIn PDF document text
    • http://yishiweb.com/upfiles/files/20210901_053012.pdfIn PDF document text
    • http://oguzlarotomatiksanziman.com/depo/sayfaresim/file/87132509780.pdfIn PDF document text
    • http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613f6cc6a4e83---xutesomuse.pdfIn PDF document text
    • http://zjleiou.com/images/upload/File/pejine.pdfIn PDF document text
    • https://crownprolaw.cn/userfiles/Proj_Name/files/82056161903.pdfIn PDF document text
    • http://geometrabottero.it/userfiles/files/5142246007.pdfIn PDF document text
    • https://totspotdaynursery.co.uk/ckfinder/userfiles/files/fapokufasi.pdfIn PDF document text
    • https://anukulagrotech.com/ci/userfiles/files/51064829162.pdfIn PDF document text
    • https://luminex.pl/upload/file/sobime.pdfIn PDF document text
    • http://gerocuki.hu/user/file/zekagalazezugederiguwur.pdfIn PDF document text
    • http://ct-tci.com/cttax/userfiles/files/ronavo.pdfIn PDF document text
    • http://laser-piskovani.cz/democms/userfiles/file/talalusuzukafusexunevonog.pdfIn PDF document text
    • http://lavalnerina.it/userfiles/file/juxaruwexaro.pdfIn PDF document text
    • http://arabic.cz/ckfinder/userfiles/files/raxoraburad.pdfIn PDF document text
    • http://innovatepc.com/userfiles/file/xugapufofuvadafinegegu.pdfIn PDF document text
    • http://agendatourvietnam.com/hinhanh/file/27055132146.pdfIn PDF document text
    • http://brenno-tojestto.pl/userfiles/file/zugofimalakereniduzoxoke.pdfIn PDF document text
    • https://fulzugaskozpont.hu/files/temadelaruxer.pdfIn PDF document text
    • https://jhservice.net/imagenes/galeria/files/58031061499.pdfIn PDF document text
    • https://toliveinchristjesus.ceosale.catholic.edu.au/application/third_party/ckfinder/userfiles/files/wexegoz.pdfIn PDF document text
    • http://sanphamhanquocymy.com/uploads/files/37259170339.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=viptools+instagram+followers+freePDF link annotation
    • 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_off0000e595.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE595 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fdac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDAC 10756 bytes
SHA-256: cf641c9353b6c73e20f7604fc932db2f7f6e3562abbb38ca84171968fb4ecb9a
font_02_sfnt_off0001167c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1167C 17068 bytes
SHA-256: e4813ac6f267ab3301da60522ae6a2ea0eaef59a3a7f2fb4705818c019e3794d

Open this report in the interactive analyzer, or submit your own file for analysis.