Malicious PDF — malware analysis report

Static analysis result for SHA-256 d07fe404a7c6bcb7…

MALICIOUS

PDF

86.1 KB Created: 2021-08-07 11:47:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: c041202f011f1f1ede5fa1a450ee8b4f SHA-1: ac41495bf94bfb71d1ae523d83b46694539860c2 SHA-256: d07fe404a7c6bcb7ca09bf8f44222ae8f630e933fb2de1ba2cc86b40ebade5ba
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. It contains numerous URLs pointing to compromised WordPress sites, suggesting it's part of a link farm designed to redirect users to malicious content. The presence of these links and the nature of the heuristics indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/16090ea2c9beca---83751941062.pdf In PDF document text
    • https://alice-immo.com/userfiles/file/18836374828.pdfIn PDF document text
    • http://ghettaetamionarchitetti.it/userfiles/files/39048504524.pdfIn PDF document text
    • http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16086884105db9---vinelabipiruven.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/3hh1ere0q9e887ojt5gbhpvda4/mulujumixediw.pdfIn PDF document text
    • http://richmore.kr/uploadfile/fckeditor/file/budopilofutaladovubos.pdfIn PDF document text
    • http://aimic.com/userfiles/file/mamolebabariraz.pdfIn PDF document text
    • https://functionalmovement.gr/wp-content/plugins/super-forms/uploads/php/files/24db2f7a10f63455dc73253da56225b5/giwemupufowevidevex.pdfIn PDF document text
    • http://attlas.center/userfiles/file/38339062277.pdfIn PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d9e5792803---50045212053.pdfIn PDF document text
    • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160746751b4246---59606646337.pdfIn PDF document text
    • http://duancanhotot.com/upload/files/vewedizatijit.pdfIn PDF document text
    • http://dienlanhlongan.com/upload/files/lubitajobamap.pdfIn PDF document text
    • http://irinka.org/ckfinder/userfiles/files/96551506564.pdfIn PDF document text
    • http://castrolmintabolt.hu/images/upload/file/renir.pdfIn PDF document text
    • https://xn--bren-mgenwil-gcbf.ch/sites/default/files/fck-uploads/file/24717901005.pdfIn PDF document text
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afce076ac8e---bugafelifonagegig.pdfIn PDF document text
    • https://www.karavanlakesfet.com/wp-content/plugins/super-forms/uploads/php/files/a8ef00fbc3137cb6494471d6bb0094a1/76688270067.pdfIn PDF document text
    • http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160789ae78cccf---joxidoxopijiw.pdfIn PDF document text
    • http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fd0d1e63a0---22952466200.pdfIn PDF document text
    • http://alliance-ic.ru/uploads/file/lexaxotinuvo.pdfIn PDF document text
    • http://pivotal-technologies.com/userfiles/file/12642281295.pdfIn PDF document text
    • http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c88262955f---76480606070.pdfIn PDF document text
    • https://palcev.ru/userfiles/file/sudepuxupugetuwudib.pdfIn PDF document text
    • http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160e6bea490039---32333098700.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=genie+garage+door+remote+programmingPDF 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_off0000ef66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF66 10560 bytes
SHA-256: 5c22ec91269a760d3f74c1a04771b7bc11fce60ee1a4989224d021c57f399964
font_01_sfnt_off00010740.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10740 16324 bytes
SHA-256: 3dbd57a49f9449a8e1c8e798bd5a5b622a5e18d6ce3b60de4d41e514960c3fe6
font_02_sfnt_off000131a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131A8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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