Malicious PDF — malware analysis report

Static analysis result for SHA-256 47af325d9b6d73ca…

MALICIOUS

PDF

82.9 KB Created: 2021-09-20 10:10:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: ca3d700c1d0779f90f7557d59e4a983b SHA-1: 4d5efd638bbdbd4b06d1af26b2cdfbaa8d4c34e5 SHA-256: 47af325d9b6d73ca5b70742ed273b0ca65dbee03bd2353cb086231393b497c72
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to disposable domains and are structured as link farms, a common tactic for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://crysiq.ru/uplcv?utm_term=samorost+2+android PDF link annotation
    • http://sibaco.ru/ckfinder/userfiles/files/63557144919.pdfIn PDF document text
    • http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/161451d3b205b9---zegemiwopozidabax.pdfIn PDF document text
    • https://weishinclinic.com/uploads/files/202109080802165563.pdfIn PDF document text
    • http://nesthomes.in/userfiles/file/38358821803.pdfIn PDF document text
    • http://www.tecnologycenter.com/admin/uploaded/fck/file/ronow.pdfIn PDF document text
    • http://monyetmesum.com/contents/files/22346822773.pdfIn PDF document text
    • http://dajuicebarus.com/uploads/files/75654001208.pdfIn PDF document text
    • http://www.gobarging.com/uploads/textareas/file/pulonosibudivujutaja.pdfIn PDF document text
    • https://bokaichenyu.com/upload/files/89288312770.pdfIn PDF document text
    • https://roshnaai.com/ckfinder/userfiles/files/xerabiworulukutox.pdfIn PDF document text
    • https://jagamimpi.net/contents/files/86517565681.pdfIn PDF document text
    • http://uptindia.com/newsimages/file///24986399966.pdfIn PDF document text
    • https://doublehair.center/upload/ckfinder/files/70521657975.pdfIn PDF document text
    • http://yogaschoolofkerala.com/photos/editor/files/20588264880.pdfIn PDF document text
    • https://pasarangroup2.com/contents/files/molasib.pdfIn PDF document text
    • http://www.its-dph.cz/admin/fckeditor/editor/userfiles/file/wajiwoposawi.pdfIn PDF document text
    • https://episcopiaoradiei.ro/files/butafepixurupaxuton.pdfIn PDF document text
    • http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/cd9c7c9e8c5157f1eb8699a613cbcd42/rexesofejavabaxuzu.pdfIn PDF document text
    • http://donahoelawfirm.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/32671816279.pdfIn PDF document text
    • http://romento.com/uploaded_files/userfiles/files/43008023151.pdfIn PDF document text
    • http://taiwan-casters.com/userfiles/file/diwekumirivazotafagajijin.pdfIn PDF document text
    • http://www.sun-green.eu/ckfinder/userfiles/files/rakimekejutasi.pdfIn PDF document text
    • http://solarexperten.ch/fckeditor/editor/images/file/tabojulimejerof.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_off0000d7f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7F1 20528 bytes
SHA-256: bbc988e0b308319c4fe7b80356ce0db4d4397d8646f121785480930b49160077
font_01_sfnt_off00010ce3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CE3 10424 bytes
SHA-256: dee9d8f054569a1a3bd4b1ea98a96e40ce7e2eef7ac05cad0aa3a60e4951cd00
font_02_sfnt_off00012480.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12480 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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