Malicious PDF — malware analysis report

Static analysis result for SHA-256 e032499ace54da7e…

MALICIOUS

PDF

83.5 KB Created: 2021-09-19 05:01:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 6bdd9b10070b53515e2dfff18794d0f4 SHA-1: 6744293eca689a540a3e87c6b50754cd941a4239 SHA-256: e032499ace54da7e9530640e2e9b5e2867998458a8a623e99a386df694665fe2
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. The document contains numerous embedded URLs, many of which point to disposable domains and are structured as link farms, suggesting a phishing or malware distribution campaign. The presence of multiple external URIs and the link farm heuristic strongly indicate an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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://philabc.ru/uplcv?utm_term=aot+game+browser PDF link annotation
    • http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613b91136b2cb---zenirotokamepuxekaxadi.pdfIn PDF document text
    • https://stcc-sa.com/motakamel/Ups/files/fuvineperigogab.pdfIn PDF document text
    • http://decamiones.com/userfiles/file/12324249349.pdfIn PDF document text
    • http://freewest.at/punoropogoxe.pdfIn PDF document text
    • http://fredericjean.net/oplusco/file/67554595117.pdfIn PDF document text
    • https://dodatkireklamowe.pl/web/uploads/files/kotuvamelaxasega.pdfIn PDF document text
    • https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/j2m71ojsftmq8nja266s8u2a63/19144181036.pdfIn PDF document text
    • http://arisutour.com/ckupload/files/51229595878.pdfIn PDF document text
    • http://kpdb.org/userfiles/files/75241702977.pdfIn PDF document text
    • http://aktifbant.com/resimler/files/95290286299.pdfIn PDF document text
    • http://kahasat.cz/data/file/63802442354.pdfIn PDF document text
    • http://ibnuaffan.com/ckfinder/userfiles/files/25228177772.pdfIn PDF document text
    • https://inprovituruguay.com/ckfinder/userfiles/files/rimixinuponikopeti.pdfIn PDF document text
    • http://esistore.lu/userfiles/file/67205237660.pdfIn PDF document text
    • http://6nergy.fr/6nergy/sites/default/user/file/venobasivuguluvuzim.pdfIn PDF document text
    • http://alconsprom.ru/ckfinder/userfiles/files/vofedojexiviguzo.pdfIn PDF document text
    • https://rh4-h1tapi-turbo.com/contents/files/rokija.pdfIn PDF document text
    • http://strahyi.ru/images/file/53823917355.pdfIn PDF document text
    • https://triatlonshop.cz/userfiles/file/rexunop.pdfIn PDF document text
    • http://spamsmsgiare.com/media/ftp/file/zeguzijivujagozorup.pdfIn PDF document text
    • http://virtuozi.ru/sites/all/sites/virtuozi.ru/files/ludalupovigepovolapidom.pdfIn PDF document text
    • http://shinyoungvalve.com/userData/board/file/kivofesofakebigisozog.pdfIn PDF document text
    • https://bhiringisamsankalimandir.org/ckfinder/userfiles/files/46814581286.pdfIn PDF document text
    • http://zafirkort.com/uploads/files/kisitigenev.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_off0000e020.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE020 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f832.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF832 18860 bytes
SHA-256: 189ac2955b189e0b34b3dc00a7c2f4c439a043439c9db772023d72420f69de5c
font_02_sfnt_off000128e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128E6 10416 bytes
SHA-256: 9cce06e9a6af89f14e52ab1b954c2d67964e7b57412a96ef22eeef560652d516

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