Malicious PDF — malware analysis report

Static analysis result for SHA-256 34f0c3dd1b09443a…

MALICIOUS

PDF

104.1 KB Created: 2021-09-19 06:30:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: f35ccb069b26aefe2fdac1f9cbee85e4 SHA-1: 3e97a4810dfef171fb58acf69d6d5ce222538ddd SHA-256: 34f0c3dd1b09443a4171c09cafd929e1871f10f7199ef4061782eeb2163b7c56
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF contains numerous links to external websites, many hosted on compromised or disposable domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

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 http://jadeite.ru/images/file/36775064177.pdf In PDF document text
    • https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/e4a5e4f3960eecf3a923d5ead2b7390b/86863572102.pdfIn PDF document text
    • https://kcss.hu/korosi/userfiles/file/60308971051.pdfIn PDF document text
    • http://velkoobchod-man.eu/ckfinder/userfiles/files/94101313505.pdfIn PDF document text
    • https://daotaolaixesontay.com/uploads/file/jezirulitumal.pdfIn PDF document text
    • https://www.babetravelling.com/ckfinder/userfiles2/files/25622146899.pdfIn PDF document text
    • https://momsgardenfoods.com/ckfinder/userfiles/files/26024607342.pdfIn PDF document text
    • https://bykevin.com/wp-content/plugins/super-forms/uploads/php/files/e47e47ae29f85aaec98e3413d446d951/xibuzelexanuv.pdfIn PDF document text
    • http://ymmicro.com/files/files/92822911050.pdfIn PDF document text
    • http://geomanteia.com/userfiles/files/73066237701.pdfIn PDF document text
    • https://himalayanwanderer.com/himalayan/userfiles/files/28856649269.pdfIn PDF document text
    • http://appinaris.net/ckfinder/userfiles/publics/files/kawitojasajujuleru.pdfIn PDF document text
    • https://casalindasbakery.com/ckfinder/userfiles/files/23854387191.pdfIn PDF document text
    • http://charolais-hessen.de/write/userfiles/file/55571733918.pdfIn PDF document text
    • http://topspeed4wd.com/ckfinder/userfiles/files/89748241820.pdfIn PDF document text
    • http://studiotecnicodama.it/userfiles/files/guvodadanugilidigosewili.pdfIn PDF document text
    • http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161468972acfce---17563401349.pdfIn PDF document text
    • http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613059502993a---68432569379.pdfIn PDF document text
    • http://johnlillylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/24888888492.pdfIn PDF document text
    • https://diphong.com/uploads/4695676322.pdfIn PDF document text
    • http://shipsupply.ru/userfiles/files/ponagufu.pdfIn PDF document text
    • https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c0717813ac---52862680024.pdfIn PDF document text
    • http://akicgiyim.com/userfiles/file/84253165290.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=exercises+with+zero+and+first+conditionalPDF 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://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_off00012dcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DCC 10804 bytes
SHA-256: f101c356d173381c90446785608419ad8a1c9c29eb5e204429f39d0917ec2174
font_01_sfnt_off000146c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x146C5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00015ed7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15ED7 19684 bytes
SHA-256: a9447a195f95d6a896aec8da25818be18ab1174e323ee35e6d6391d59468294a

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