Malicious PDF — malware analysis report

Static analysis result for SHA-256 f59327ac6df71c53…

MALICIOUS

PDF

82.6 KB Created: 2021-05-15 05:25:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: de717ed405df6eb17661b54c16115805 SHA-1: feb2898034f01014247192d5c572b7641ee38558 SHA-256: f59327ac6df71c539876ae26603a1853cd989f927a8274e3b8d33e6c6689e1bd
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8218

Heuristics 4

  • 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
  • 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://vilenefex.ru/strik?utm_term=from+third+world+to+first+book+pdf PDF link annotation
    • http://rasazajafatirek.mypressonline.com/nabefofi.pdfIn PDF document text
    • http://lemugedapa.iblogger.org/xanetazutiropuwofe.pdfIn PDF document text
    • https://loroxiboziniluz.weebly.com/uploads/1/3/4/4/134402159/xesomabodagekaxe.pdfIn PDF document text
    • https://gejizataki.weebly.com/uploads/1/3/3/9/133997606/jekilamunobuvi-zepanujit-relanokaloru.pdfIn PDF document text
    • http://kuzososo.mygamesonline.org/30368882916.pdfIn PDF document text
    • http://gazozasi.scienceontheweb.net/11281377002.pdfIn PDF document text
    • http://madawuboso.sportsontheweb.net/79041926235.pdfIn PDF document text
    • https://sejoxamopizava.weebly.com/uploads/1/3/1/8/131858661/gipujoxi-mupolozudap-duwiriparaxegap-diwak.pdfIn PDF document text
    • http://ralenexixozuk.iblogger.org/mawiwewipupetududizudizer.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7d603f6-44f3-4eb0-888f-16abd100e4c9/38187490041.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/037df95e-165b-45e3-9c5d-176183e4031b/the_kingdom_of_this_world.pdfIn PDF document text
    • http://pogetowem.onlinewebshop.net/how_to_reset_a_uniden_scanner.pdfIn PDF document text
    • http://vifidumefitur.atwebpages.com/67993068784.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43ead984-abdd-4a5a-a068-d5535e327d47/37930967160.pdfIn PDF document text
    • https://s3.amazonaws.com/wovisak/new_business_development_manager_job_description.pdfIn PDF document text
    • http://meganajaxovitag.rf.gd/pidexizivadaburo.pdfIn PDF document text
    • https://s3.amazonaws.com/kukupunopedon/38173027656.pdfIn PDF document text
    • http://fijazatomowov.epizy.com/93417596415.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000135be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135BE 4884 bytes
SHA-256: dcb5c75a0a381912c6ab62e62767f91efb720ee6467740c0d027694f8cf6f8cf