Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e3901e395bdb41e…

MALICIOUS

PDF

82.2 KB Created: 2021-06-21 05:16:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 60ec3622f9de269caf4ca98e7968435d SHA-1: 51a5e1f2fc05783a1b9c8a7fc90de69459a7af76 SHA-256: 0e3901e395bdb41e9a7234fb15ad497908dbaaf31fe0a995b158809a2fe4377a
172 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which appear to be compromised CMS upload directories, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a malicious download lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 8

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://medvor.ru/uplcv?utm_term=vishnu+purana+kannada+pdf PDF link annotation
    • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160c3ad551039a---37463715249.pdfIn PDF document text
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9b085dd924---38187361029.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/16086af4a9b2c9---70612844461.pdfIn PDF document text
    • https://bd-sokolovska.eu/userfiles/file/50792449658.pdfIn PDF document text
    • http://ricarda-allegra.de/userfiles/file/xovizerusikurofuk.pdfIn PDF document text
    • https://fotobolfestmeny.hu/mvc/userfiles/file/664272292.pdfIn PDF document text
    • https://teenvolunteer.org/wp-content/plugins/super-forms/uploads/php/files/275431a33e9b961e188e1566ac7cbe33/luxaj.pdfIn PDF document text
    • https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606fa0b3d1449---wiluzanuwamosuka.pdfIn PDF document text
    • http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/9534fd2e096001779bf79b1a603e113f/xagemiw.pdfIn PDF document text
    • https://www.autodepotperformancegroup.ca/wp-content/plugins/super-forms/uploads/php/files/eofcntfnb1ddl2kvb8ojmc98l4/nusevat.pdfIn PDF document text
    • http://alnadaoil.com/userfiles/file/jupewapozak.pdfIn PDF document text
    • http://sanitaerprofi.ch/fckeditor/editor/images/file/sodewitere.pdfIn PDF document text
    • http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099ba2d567a0---pakipozavowavive.pdfIn PDF document text
    • http://niestachow.pl/data/aktualnosci_imgs/file/vipalakotudotomagan.pdfIn PDF document text
    • http://usmleworkout.com/files/file/11399484172.pdfIn PDF document text
    • http://valeneighbors.com/userimages/11724723948.pdfIn PDF document text
    • http://ncabhsa.com/clients/875427/File/popexosinufelakuro.pdfIn PDF document text
    • http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160796277822c2---5939528486.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fa96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA96 5128 bytes
SHA-256: 695fe3e54e2ebafc60bdaff9b909c178bb8a8d89732b89a42259b80a4fa6bbae
font_01_sfnt_off00010c04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C04 15012 bytes
SHA-256: 96901f0edba49e7cfd1c9cbd5aadd1aec20055c4262fead473b0eb8540c75b1f

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