Malicious PDF — malware analysis report

Static analysis result for SHA-256 f86606200e6717e4…

MALICIOUS

PDF

78.2 KB Created: 2021-09-17 05:30:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 7e6e3a77ee535616b3cc1a744de185da SHA-1: d34654f95d8623098e8ade93ba539cee922a631f SHA-256: f86606200e6717e44b69b3723f8b9b173c6d3fce9b73f8c154d6acd516cb4cd6
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a significant number of external links, many pointing to compromised WordPress sites or disposable hosting. This indicates an attempt to redirect users to malicious content, likely for phishing or malware distribution. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://studiophotosfashion.it/userfiles/files/kexifikam.pdf In PDF document text
    • http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/161312c860eb65---gujufelakewunivimalif.pdfIn PDF document text
    • http://timebank.ru/sites/default/files/photos/pagefile/50077564430.pdfIn PDF document text
    • https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/89c8780a65c97da00caa21ac33771ce6/dokilafa.pdfIn PDF document text
    • http://arndt-fahrschule.de/userfiles/file/96545025037.pdfIn PDF document text
    • https://giyimkent.formenemlak.com/upload/ckfinder/files/vibedavonavoviw.pdfIn PDF document text
    • http://cuoredicane.it/userfiles/files/11223283579.pdfIn PDF document text
    • http://suamayin.biz/userfiles/file/68667999235.pdfIn PDF document text
    • http://autovoda.ru/upload/files/39247331392.pdfIn PDF document text
    • https://roofmed.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161410a9501a1b---mefiwefegetovifakikopuj.pdfIn PDF document text
    • http://big-blue-bus.com/pics/fotos/1/file/9331403886.pdfIn PDF document text
    • https://lengthening-sldf.com/userfiles/file/53748465256.pdfIn PDF document text
    • http://cl-metalparts.com/d/files/xosakapalefugegexakobu.pdfIn PDF document text
    • https://nikoljski.com/ckfinder/userfiles/files/72837950089.pdfIn PDF document text
    • https://saintarseny.ca/sites/saintarseny.ca/files/file/94723607938.pdfIn PDF document text
    • https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a5e59924f6---wunazodaf.pdfIn PDF document text
    • http://solarexperte.ch/fckeditor/editor/images/file/56357788758.pdfIn PDF document text
    • http://inciboya.com/resimler/site/files/kabaz.pdfIn PDF document text
    • http://www.yeosung21.or.kr/ckfinder/userfiles/files/1630865800.pdfIn PDF document text
    • http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614165b87b106---63967056692.pdfIn PDF document text
    • http://stsmcc.org/www/js/ckfinder/userfiles/files/wemifosurejezidegikilod.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=among+us+mod+versionPDF 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_off0000cdf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDF2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e604.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE604 17912 bytes
SHA-256: 62268552cd0ceb3d5dee589edf7ee07a04f6e54e7b29ddefe73065e7676ab5d5
font_02_sfnt_off000113e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113E8 10432 bytes
SHA-256: d53163b84ab398b957cdcb0ac8f1500ae0059566ac81cabe7e539b261a8b9974

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