Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ee99dd0c21e543d…

MALICIOUS

PDF

81.4 KB Created: 2021-09-17 21:13:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: baba87528f321a0c6c4166575cce488a SHA-1: be194ece987b2d059c329aabb8b91e97898d33ca SHA-256: 0ee99dd0c21e543d2c921a210fd8eedb0c09142c3fbfe12f053d5e6c0884dc8b
156 Risk Score

Malware Insights

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

The PDF file contains numerous links, many pointing to potentially compromised websites or disposable hosting, suggesting a link farm designed to lure users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, and the document body was unreadable binary data.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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://creativetechno.in/userfiles/file/18207234499.pdf In PDF document text
    • http://sorokolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/lajalumakenu.pdfIn PDF document text
    • http://www.bargiel.com.pl/ckfinder/userfiles/files/dosisanivef.pdfIn PDF document text
    • https://www.bocamvigliesrooms.com/wp-content/plugins/super-forms/uploads/php/files/2f0abd29b22411fb310b5b5c168eaf59/bososaguxid.pdfIn PDF document text
    • http://kahounova.cz/userfiles/file/83004141575.pdfIn PDF document text
    • http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1614447ff99862---15602712860.pdfIn PDF document text
    • https://codecs.ro/images/file/84605630382.pdfIn PDF document text
    • http://pol2-simf.ru/userfiles/file/xonotezebanun.pdfIn PDF document text
    • http://khyljg.com/uploadfiles/files/bosowubol.pdfIn PDF document text
    • http://chatyzvule.cz/uploads/rubuzulefegusexefif.pdfIn PDF document text
    • http://ljjxmining.com/uploadfile/file///2021090315330921.pdfIn PDF document text
    • https://sluganarodu.org/userfiles/files/88414532501.pdfIn PDF document text
    • http://willbramephotography.com/sigaxowojedu.pdfIn PDF document text
    • http://www.megasaludips.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140fcd4b6f23---64784077211.pdfIn PDF document text
    • http://zjhywt.com/images/upload/File/vajedexazemume.pdfIn PDF document text
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/5b667f108f036961ab4944533562a81b/61818513951.pdfIn PDF document text
    • http://gsemilia.it/userfiles/files/9195241168.pdfIn PDF document text
    • https://vantainoidia.vn/ci/userfiles/files/92792172479.pdfIn PDF document text
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/161324d2470287---76221224454.pdfIn PDF document text
    • http://enslev-anlaegsservice.dk/userfiles/file/47624493855.pdfIn PDF document text
    • http://robertwestlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/demogefexedituwanenurup.pdfIn PDF document text
    • https://performanshost.com/calisma2/files/uploads/nijejopatalekajuver.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=tik+tok+app+download+old+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_off0000d7eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7EB 18456 bytes
SHA-256: 44c43f6d369dd1f68ed5b9eba9add1a922eddb9ec19f4171e408df1bc7d35e49
font_01_sfnt_off0001078e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1078E 10592 bytes
SHA-256: 7b2ef22765635d8c659ee1f0532af966ededf47974a8cecffbe4480e0e0bcf24
font_02_sfnt_off00011ffb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FFB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1