Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e5c129f477c2354…

MALICIOUS

PDF

71.8 KB Created: 2021-09-18 00:55:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: fe3920b40adeb00f600e434f9a6a24c8 SHA-1: b5b4eea3bc18494b8a75dd2c2c3bcb7b2b3667bd SHA-256: 2e5c129f477c23541659cfad5d6bab8182aa146b3e863fb0d4982fa70671a7a5
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected by ClamAV as Pdf.Phishing.Trojan and ML classifiers indicated a high probability of maliciousness. The PDF contains numerous embedded URLs, many of which point to potentially malicious domains, suggesting a phishing or malware distribution attempt. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for link farms, further supporting a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://15881588.com/ckupload/files/49660341582.pdf In PDF document text
    • https://granitabrasive.com/editor_up/kipubaxetapixafiwilapig.pdfIn PDF document text
    • http://all-premium.com/user_file/files/rifopibukabi.pdfIn PDF document text
    • http://xn--80adic7alej3d.xn--p1ai/userfiles/file/xaruku.pdfIn PDF document text
    • https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ca972486b0---xiwodudujodagezoxedunawik.pdfIn PDF document text
    • https://infosantiere.ro/userfiles/file/gimurenube.pdfIn PDF document text
    • http://benetalent.com/upload/files/bubasajepozajetud.pdfIn PDF document text
    • https://laurallo.com/ckfinder/userfiles/files/fezovarasul.pdfIn PDF document text
    • http://liluby.com/upload/file/67910098648.pdfIn PDF document text
    • http://www.beautyvogue.ch/Files/file/20030688284.pdfIn PDF document text
    • http://0851gay.org/userfiles/202109file/2021090515443470554.pdfIn PDF document text
    • http://asztalosweb.hu/userfiles/file/51443351587.pdfIn PDF document text
    • http://di-tech.kr/fckeditor/userfiles/file/7076983129.pdfIn PDF document text
    • https://gullyracing.it/admin/ckfinder/userfiles/files/41480808287.pdfIn PDF document text
    • https://ystechpro.com/nbloom/fckuploads/file/81481936037.pdfIn PDF document text
    • http://eqletstalk.com/uploads/files/202109100110036020.pdfIn PDF document text
    • http://erisalaw-chicago.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/13211256427.pdfIn PDF document text
    • http://aotwresort.info/ckfinder/userfiles/files/xexogego.pdfIn PDF document text
    • http://gazosilikatnn.ru/uploads/files/bebukugi.pdfIn PDF document text
    • http://onishi-kyosendo.jp/archive/25397545597.pdfIn PDF document text
    • http://agenziaimmobiliarecannavo.eu/userfiles/files/25305223438.pdfIn PDF document text
    • http://foto-klub.dk/userfiles/file/7469089989.pdfIn PDF document text
    • https://taperagi.com/contents/files/repesupunax.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=streaming+film+imperfectPDF 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_off0000b645.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB645 10608 bytes
SHA-256: 22e91197dba952d1e24fff51ca979ee9caa18931b62dcf5217f06f30bb035187
font_01_sfnt_off0000ce84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE84 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e696.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE696 16880 bytes
SHA-256: d9a273035cca9926ad27e246a7d79dc8edaa4f33a450b2b9c766f71ab4c9c304

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