Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d96a5aa6fabcbc8…

MALICIOUS

PDF

74.4 KB Created: 2021-09-08 00:22:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 9049137d21bb7b074b92b98aa3d988e3 SHA-1: ee189781699ee9e0a77c267a4fc24b373ca979e6 SHA-256: 8d96a5aa6fabcbc8cd51cbdc9a425273c533abd593be23f32e276db697dae605
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URLs, many of which point to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to distribute malware or phish users. The presence of embedded URLs and the overall structure strongly suggest this document is part of a phishing campaign, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 6

  • 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.
  • 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://nomylo.ru/uplcv?utm_term=lady+chatterley%27s+lover+online+pdf PDF link annotation
    • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/16077d4a843659---50943638604.pdfIn PDF document text
    • https://tmtteks.com/files/11559405063.pdfIn PDF document text
    • http://mploa.com/clients/2/2c/2ccb326c3583e393996f575e36ee3974/File/15273671275.pdfIn PDF document text
    • http://twfindia.in/userfiles/files/48873542717.pdfIn PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/b4fa9b7c3905614bb5878995d6df24c9/zenemamitejoruw.pdfIn PDF document text
    • http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/1612becf55c2f9---10430513754.pdfIn PDF document text
    • https://numen-wow.com/userfiles/cloud//files/58167263386.pdfIn PDF document text
    • https://rockyhotelsgroup.com/uploaded/files/42831390889.pdfIn PDF document text
    • http://canyonmeadows.org/userimages/bobabugiwixaxapodol.pdfIn PDF document text
    • https://pensiunea-escape.ro/ckfinder/userfiles/files/fukivevize.pdfIn PDF document text
    • http://pospatrans.cz/UserFiles/File/42839651890.pdfIn PDF document text
    • http://z-sinpro.com/upload/files/xabiv.pdfIn PDF document text
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/160f139346ac4a---gufan.pdfIn PDF document text
    • http://klawiatury-foliowe.pl/_data/file/39256505238.pdfIn PDF document text
    • https://delta-relay.be/userfiles/file/zijavasagolopejopa.pdfIn PDF document text
    • http://rrmkaryacollege.org/rrmkarya/userfiles/file/25609551863.pdfIn PDF document text
    • http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b42762a6c6f---44867693069.pdfIn PDF document text
    • http://thevale.us/userimages/junobapemenimamurikofol.pdfIn PDF document text
    • https://skl.deindrukdemo.nl/upload/files/7297684454.pdfIn PDF document text
    • http://www.deopendeur.org/imgUser/file/nidonapamanapipixeranese.pdfIn PDF document text
    • http://montazerangroup.com/uploader/file/lesomunofusef.pdfIn PDF document text
    • http://dalnoboy.org/data/filestorage/upload/files/betifunakokumagilopene.pdfIn PDF document text
    • https://www.dgaspcsm.ro/ckfinder/userfiles/files/53014968084.pdfIn PDF document text
    • https://www.bevillelecomte.com/ckfinder/userfiles/files/xiwedosafevivedi.pdfIn PDF document text
    • http://lirealestatelitigator.com/wp-content/plugins/super-forms/uploads/php/files/d7ac283f1eee58dc4352c23855d3776c/97424540979.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_off0000c184.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC184 16152 bytes
SHA-256: 31f845fb6441b71f33e5a442807b053b52b71b76b21cb77c60d8f57d7c7870ae
font_01_sfnt_off0000eac4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC4 10888 bytes
SHA-256: ee49afd23ee2f07f58f2a17fdc7dbefbe0941105741e733c0fc9e303dbcb4962
font_02_sfnt_off000103ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103ED 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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