Malicious PDF — malware analysis report

Static analysis result for SHA-256 080342c7f7078c0e…

MALICIOUS

PDF

66.7 KB Created: 2021-06-23 07:20:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: cbd69ada0596c2ffb88eaed681f192f0 SHA-1: 9af7707505fcd6e03ae5f26f6d2577d0a05a29f7 SHA-256: 080342c7f7078c0edda173f32a4b05cf930135e79363de93e8c9bd66b7072d06
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many of which are hosted on compromised CMS upload directories or disposable hosting, suggesting a link farm or phishing lure. The document body, though heavily obfuscated, contains a title related to watching a movie online, which is likely a pretext to drive users to these malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://vieclamxaydung24h.com/upload/files/93011891057.pdf In PDF document text
    • http://bajcsidavidfoto.com/_user/file/tebirizuwemeve.pdfIn PDF document text
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e0c2d87f79---7142717843.pdfIn PDF document text
    • https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/g6greqe1onb4j732o548d9kna4/71282434159.pdfIn PDF document text
    • https://swimproject.eu/wp-content/plugins/super-forms/uploads/php/files/97193f5f42faa37b74a94bcf2f06d8ce/durelewopi.pdfIn PDF document text
    • http://www.alfapilates.pl/upload/file/18459301591.pdfIn PDF document text
    • https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/0252f8e72a3fe9570caf3840733fb44e/54442098814.pdfIn PDF document text
    • http://www.molinoag.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608be043a3019---33182928473.pdfIn PDF document text
    • https://seroinstitute.com/wp-content/plugins/super-forms/uploads/php/files/aaa43152c13b56efab6104b26fd16b48/nuxusivowutozaz.pdfIn PDF document text
    • https://bodwellassociates.com/wp-content/plugins/super-forms/uploads/php/files/32386d6acec5bb8db80ace2f69dcf87f/renunivimobafuj.pdfIn PDF document text
    • https://goactive.hu/wp-content/plugins/super-forms/uploads/php/files/1f2277c9ed9735b2314218d8954e91fd/wofajugujolelitiduzavane.pdfIn PDF document text
    • http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/fnn47k693qubqqb9njpnjgimi0/faroxes.pdfIn PDF document text
    • https://www.aserspa.net/wp-content/plugins/super-forms/uploads/php/files/2j606d562mt34347nkrhbrk4va/zuridolatapukijokex.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6e694ef13f---zovukado.pdfIn PDF document text
    • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/16071602c995cd---57534548700.pdfIn PDF document text
    • http://aivieksteslaivas.lv/userfiles/file/wetosonojukakixefobaf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=love+ni+bhavai+watch+online+full+moviePDF link annotation
    • 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c7fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7FA 5080 bytes
SHA-256: 389e819e672d935d83cfa57efbde55fa731ea31e0e9b0dc9e3c3f286116e159c
font_01_sfnt_off0000d943.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD943 10676 bytes
SHA-256: 5739be113808f45aa1f7e5d8c7340ae05315b0726f353f3750735b7e5a35a72b