Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea1dbc6d425599d5…

MALICIOUS

PDF

83.2 KB Created: 2021-09-06 17:32:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 1a57b76dc64419541e659e9c32cb392c SHA-1: 6eaa75eed0348c66382543e59ab098f2bc9e07dc SHA-256: ea1dbc6d425599d553b778f876f5df3e3e623f91c83caeace6bff50db81fa070
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm directing to multiple PDFs hosted on compromised WordPress sites, indicating a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly suggest malicious intent. No scripts were extracted, but the structure and embedded URLs point to a malicious link distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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://yournew.site/wp-content/plugins/super-forms/uploads/php/files/gpvo4lbhqvgo1k6vii5ub8ajj5/26212462267.pdf In PDF document text
    • http://capitolmetrophysicaltherapy.com/userfiles/file/jikaxovetivizatenivov.pdfIn PDF document text
    • http://jainfarms.com/uploads/visewad.pdfIn PDF document text
    • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160dfc44bb4044---54433329849.pdfIn PDF document text
    • http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160e4f68a2d3d8---fibagifojapamuv.pdfIn PDF document text
    • http://allycatering.com/userfiles/85308970672.pdfIn PDF document text
    • https://equantumconsulting.com/files/files/37153775667.pdfIn PDF document text
    • http://verduciautodemolizioni.it/userfiles/file/61116178407.pdfIn PDF document text
    • http://aylincinarli.com/fckfiles/file/45334003921.pdfIn PDF document text
    • https://gencatakan.com/upload/file/21885501537.pdfIn PDF document text
    • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b88cab3f78---jawilitinozutaki.pdfIn PDF document text
    • https://nileagriculturalindustries.com/file/vudifor.pdfIn PDF document text
    • https://chp-travel.ir/data/file/bijevonijid.pdfIn PDF document text
    • http://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609150f7a8e78---tomevejefegulaxeni.pdfIn PDF document text
    • http://kpotplace.com/uploads/files/senamoluguvirasadu.pdfIn PDF document text
    • http://vakantie-noordlimburg.nl/ckfinder/userfiles/files/pofubemodox.pdfIn PDF document text
    • https://f1com.ge/wp-content/plugins/super-forms/uploads/php/files/332248a9d54f2c96d927b056f76f2724/juwajed.pdfIn PDF document text
    • https://standsimulator.com/ckfinder/userfiles/files/xofufopesenumeziba.pdfIn PDF document text
    • http://angarakshaksecurity.com/userfiles/file/69258154960.pdfIn PDF document text
    • https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160c04c655a9ac---xikesozenukidi.pdfIn PDF document text
    • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/l4jjtri0rls11jfac5usddmsab/3273003280.pdfIn PDF document text
    • http://workprohealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607682f86369f---48100403437.pdfIn PDF document text
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608611cd2f933---90640051679.pdfIn PDF document text
    • https://rumputhijau.com/contents//files/28553003196.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=tipos+de+variables+en+una+investigacion+pdfPDF 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://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_off0000e10c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE10C 18492 bytes
SHA-256: 097fda2843d1634e75e41314d011af8e25208109ae9620241ab03f67275d088f
font_01_sfnt_off00010f93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F93 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000127aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127AA 11064 bytes
SHA-256: 39a5739e05ad8826d3bc9d2d07b3b3362d5e67e481eaf974099fca6cb6b0c3ff

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