Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a9ff03ffdc6031e…

MALICIOUS

PDF

85.2 KB Created: 2021-10-13 03:00:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 94a0c4a5fe70d69d03fa7a884f3d003b SHA-1: e6b082a6200ddcd68036681cd54f8e59ff85efee SHA-256: 3a9ff03ffdc6031e72026e3dae28d12f6c9a86ea8ca39d3adfd5c75391cdb2c4
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to potentially compromised websites or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery via embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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://commissioncollectionlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/kasapuxanolasujizujeju.pdf In PDF document text
    • http://peneleos.pl/userfiles/file/xufadogad.pdfIn PDF document text
    • https://tongdaidoanhnghiep.com/app/webroot/upload/files/81623866444.pdfIn PDF document text
    • https://fiscalonline.ro/app/webroot/files/userfiles/files/2501012792.pdfIn PDF document text
    • http://sunwisechem.com/Uploadfiles/files/28386987746.pdfIn PDF document text
    • http://demkapi.com/resimler/files/67634964629.pdfIn PDF document text
    • https://gencshoworganizasyon.com/upload/ckfinder/files/94607982555.pdfIn PDF document text
    • http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615d62227fcda---87600752799.pdfIn PDF document text
    • http://montaze.org/democms/userfiles/file/16897853486.pdfIn PDF document text
    • http://www.addvanceo.info/userfiles/files/94773371517.pdfIn PDF document text
    • http://langfordfinancialservices.com/userfiles/files/mewusomazumomixom.pdfIn PDF document text
    • http://studiotecnicoligioni.com/userfiles/files/642039369.pdfIn PDF document text
    • https://semut73.com/contents/files/xoxunirutatero.pdfIn PDF document text
    • https://www.lorenzofranzone.it/wp-content/plugins/super-forms/uploads/php/files/4ecb6b42aa24e75e3fe473c992b25a0e/belugukolezevisabemaxum.pdfIn PDF document text
    • http://agrobud.net/uploaded/file/82390507239.pdfIn PDF document text
    • http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16159ab922ac11---53312574355.pdfIn PDF document text
    • http://agecarekorea.com/ckupload/files/64620465182.pdfIn PDF document text
    • https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files/31697647720.pdfIn PDF document text
    • http://roland-toys.eu/userfiles/file/2486493247.pdfIn PDF document text
    • http://djapm.com/userfiles/file/17387286595.pdfIn PDF document text
    • http://gocep.org/data/userfiles/files/47575120984.pdfIn PDF document text
    • http://edilgroupdigiovanni.it/userfiles/files/31643931686.pdfIn PDF document text
    • http://www.coverseg.com/uploads/ckfinder/files/24345431445.pdfIn PDF document text
    • https://ajwatravel.com/wheelmarine/userfiles/file/junituxelepujuxiwezatofax.pdfIn PDF document text
    • http://stavebnevyrobky.sk/www/upload/files/bixelexibolilokosujebeju.pdfIn PDF document text
    • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/1614e5f3f9e7be---ratix.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/2I9n2o-U8HI/uplcv?utm_term=how+to+sign+i+love+you+in+auslanPDF 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_off0000e548.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE548 10540 bytes
SHA-256: 18a02a768247ba9bae32a5f90fe1a7faf5ca48084f3115177e36c11f504c6075
font_01_sfnt_off0000fd78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD78 18864 bytes
SHA-256: acf36d3a2a628fb6fef4428d0c2928293dcca5e84c007a69fbbeb85c86a5dbf2
font_02_sfnt_off00012e7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E7B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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