Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe139a6bc3070ec3…

MALICIOUS

PDF

84.1 KB Created: 2021-09-15 19:07:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: e6c699ff7388128f7aa08a679784381e SHA-1: 2dba20ef524392dd610bbc9604994b890b9dee52 SHA-256: fe139a6bc3070ec367bc601e77c45e9a44983603623fd2129042c37f73749510
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, many of which are hosted on compromised WordPress sites or disposable domains, suggesting a phishing or malware distribution attempt. The 'SE_INVOICE_LURE' heuristic indicates the document's content is designed to trick the user into taking action, likely by clicking one of the embedded URLs. No scripts were extracted, but the presence of numerous external links and the invoice lure strongly suggest a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://chcial.ru/uplcv?utm_term=stream+spring+training+games PDF link annotation
    • http://kehlux.lu/userfiles/files/funosatipoj.pdfIn PDF document text
    • http://dancephoto.ru/userfiles/files/jonelufarekokatasuzago.pdfIn PDF document text
    • http://ergakiland.ru/files/files/26983657735.pdfIn PDF document text
    • http://hypotekaprezamestnancov.sk/res/file/65037352396.pdfIn PDF document text
    • http://kleinschadenexperte.de/userfiles/file/589009549.pdfIn PDF document text
    • http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/161416295926df---zeratos.pdfIn PDF document text
    • http://colokit.thienlonggroup.com/Images_upload/files/72114333726.pdfIn PDF document text
    • http://shahgrp.com/uploads/sekimamoxepixerikizatu.pdfIn PDF document text
    • https://combrooncom.com/contents/files/xirixu.pdfIn PDF document text
    • http://zatuchlina.cz/upload/file/62045769290.pdfIn PDF document text
    • http://www.pattyn360.com/upload/forum/files/62201570693.pdfIn PDF document text
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cd557a72d6---govofobuxepewodola.pdfIn PDF document text
    • https://doellefjelde-mussemarked.dk/images/newsmail/file/14537034956.pdfIn PDF document text
    • https://tlproduct.com/userfiles/file/41155471696.pdfIn PDF document text
    • http://talcmanagement.com/uploaded_files/userfiles/files/82110000468.pdfIn PDF document text
    • http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/16130facc0fce3---gotifatevuxise.pdfIn PDF document text
    • https://www.stnedu.com/ckfinder/upload/files/75696058262.pdfIn PDF document text
    • http://groupelamiri.com/uploads/FCK_files/file/58443956936.pdfIn PDF document text
    • http://esen.life/userfiles/file/fupuwulax.pdfIn PDF document text
    • http://www.jasfec.com/imgs/uploads/febivuwezofilatut.pdfIn PDF document text
    • https://institut-arabe.org/ckfinder/userfiles/files/matuselalawikasuxanalaf.pdfIn PDF document text
    • http://hoangnampte.vn/quangbasanpham/app/webroot/upload/image/files/zifogimebafox.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_off0000e4ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4EF 10504 bytes
SHA-256: b053f0051b44ba16af8e27b16b6e125084f0cfb9b4eec12622765038218cd38c
font_01_sfnt_off0000fccb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCCB 17752 bytes
SHA-256: 0fec6ef5394a47e9f29de0b85733caf07d6644af266e6409a8e1293235ce0ec9
font_02_sfnt_off00012ab5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AB5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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