Malicious PDF — malware analysis report

Static analysis result for SHA-256 254ee8ea0cd52987…

MALICIOUS

PDF

69.5 KB Created: 2021-09-14 14:05:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 6bc20d1b09c4d3431a2ba0a4c04d4c3a SHA-1: e699a7b086e3d8d35e086c4d5744699c447dcd8e SHA-256: 254ee8ea0cd52987d7496f4bc89509ccd58d1e21faebbb1a734a7920aeb6b77b
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document is identified as a phishing lure, likely containing a screenshot that conceals clickable links. Multiple heuristics indicate it's part of a link farm hosted on compromised WordPress sites and disposable domains, suggesting an attempt to redirect users to malicious content. No scripts were extracted, but the presence of numerous external links points towards a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 69 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://www.immo-uno.com/ckfinder/userfiles/files/47340223686.pdf In PDF document text
    • https://sf-tfi-pgu.uz/wp-content/plugins/super-forms/uploads/php/files/aeef741735a57d66b9dc3a50773dd4c8/48741015992.pdfIn PDF document text
    • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133b7ee0f73a---54513822744.pdfIn PDF document text
    • https://jerseyshorepirates.com/userfiles/files/58519386287.pdfIn PDF document text
    • http://grandfiltr.com/files/file/36443047104.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fc49fca80d---masevumupala.pdfIn PDF document text
    • https://gallerylingard.com/uploads/file/37549567535.pdfIn PDF document text
    • http://xn--76-6kca8aqc6c.xn--p1ai/pic/userfile/71439126761.pdfIn PDF document text
    • https://accidentmatters.com/ckfinder/userfiles/files/58907837378.pdfIn PDF document text
    • https://livresdarts.com/ckfinder/userfiles/files/sibemakalujelizor.pdfIn PDF document text
    • http://infrabud.eu/fckpliki/file/71717827332.pdfIn PDF document text
    • https://ural-aiti.ru/admin/ckfinder/userfiles/files/nuzoto.pdfIn PDF document text
    • http://soles2walk.cz/data/file/nemezofewakumaribixasanet.pdfIn PDF document text
    • https://broadstripe.com/wp-content/plugins/super-forms/uploads/php/files/5653dea91a5ecdf326d400b9d3f3e8b0/5804123112.pdfIn PDF document text
    • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161318880c1d21---78608409395.pdfIn PDF document text
    • http://francescofesta.it/userfiles/files/28520928227.pdfIn PDF document text
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135358c20a00---xesuvuzobapesoferem.pdfIn PDF document text
    • https://www.gurgy.net/ckfinder/userfiles/files/melurivemuso.pdfIn PDF document text
    • https://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1613f1e190662e---fomuwojuxitofipit.pdfIn PDF document text
    • https://vibanghanoi.com/uploads/files/27585418689.pdfIn PDF document text
    • http://maximaviajes.com/FCKfiles/file/kuwijop.pdfIn PDF document text
    • http://peter-scherer.de/userfiles/file/bojirerel.pdfIn PDF document text
    • http://bajajsports.com/userfiles/file/sorovadosesimavubu.pdfIn PDF document text
    • http://kamnitikamini.si/upload/files/kidezevokaluwevugupidepe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=registered+speed+post+tracking+indiaPDF 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_off0000b3b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3B4 10780 bytes
SHA-256: c013047e99510d63b5c9987f1f7863c335d1e0478cf4d7ed2c9aa5f9cda85e41
font_01_sfnt_off0000cc77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC77 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e489.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE489 14284 bytes
SHA-256: 2bed221e565e02667932a95ec62bd480f997441ce9f8014e9ca70d983fb1e067

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