Malicious PDF — malware analysis report

Static analysis result for SHA-256 48b12e0f204a4f5b…

MALICIOUS

PDF

72.6 KB Created: 2021-09-21 12:32:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: d97c905ea8d7acd53025a692bdaaa478 SHA-1: 1b047c7b21b59274948f2b55643846f4037a2115 SHA-256: 48b12e0f204a4f5b29fd6d25df940583e98c4a794f479011b04f87c6062898b3
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URLs, with one specifically identified as a link farm on disposable hosting, suggesting a phishing or malware distribution lure. The PDF structure and embedded URIs point towards an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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 https://pixomot.ru/uplcv?utm_term=pool+rewards+mod+apk PDF link annotation
    • https://it-remarketing.pl/app/webroot/media/files/vaganemimejufori.pdfIn PDF document text
    • http://administratieindex.nl/images/uploads/54586816415.pdfIn PDF document text
    • http://homeloanz.net/images/e/file/16667037842.pdfIn PDF document text
    • http://fw-simple.com/uploads/files/gibubuvuba.pdfIn PDF document text
    • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/161413ad556012---vemazigovusonuwesul.pdfIn PDF document text
    • https://eric-parnes.com/ckfinder/userfiles/files/55651963199.pdfIn PDF document text
    • http://www.autoservis-hubatka.cz/admin/upload/ww/file/fikajapesaboveveviviv.pdfIn PDF document text
    • https://ksuskalology.com/images/file/rofufex.pdfIn PDF document text
    • http://studiomanzetti.it/userfiles/files/24048634746.pdfIn PDF document text
    • http://interiorconsignments.com/media/file/mulibisolereludimetuf.pdfIn PDF document text
    • https://asigurareingermania.ro/wp-content/plugins/super-forms/uploads/php/files/14d7j29uf2a8qt0ijrihatqpvo/49651677195.pdfIn PDF document text
    • http://stefani.cz/fck/file/6898626687.pdfIn PDF document text
    • http://biplano.eu/userfiles/files/dosuxofokovol.pdfIn PDF document text
    • http://assisdrive.pt/userfiles/file/41468536894.pdfIn PDF document text
    • https://relaxbotanika.cz/ckfinder/userfiles/files/99337263696.pdfIn PDF document text
    • http://dymenahealthcare.com/upload/fckeditor/file/7332595725.pdfIn PDF document text
    • https://combrooncom.com/contents/files/32681861854.pdfIn PDF document text
    • http://musicincw.com/fckeditor/userfiles/image/76094899561.pdfIn PDF document text
    • http://support-trevianum.nl/userfiles/files/66571973191.pdfIn PDF document text
    • http://bon-mar.com/fck_user_files/file/nibusi.pdfIn PDF document text
    • http://xdata.pl/app/webroot/img/ckf/files/gimotezigokalunarozu.pdfIn PDF document text
    • https://1tlstar.com/storage/uploads/files/gotaxoviliwawasekek.pdfIn PDF document text
    • http://downtowncincyhotels.com/core_degree/admin/images/cms_imagesfiles/60236862647.pdfIn PDF document text
    • http://al-bandak.com/userfiles/file/49255459839.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_off0000bb49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB49 16168 bytes
SHA-256: befe03205a3571d01ea0d44fadc610a07d8603231b76a0e713b93e7b5c0cef16
font_01_sfnt_off0000e512.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE512 10440 bytes
SHA-256: f6a25607c182d283e6bfbba950d50e149f8c48ba0211722a8df98895279c15fc
font_02_sfnt_off0000fcd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCD5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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