Malicious PDF — malware analysis report

Static analysis result for SHA-256 abd83e399ff82090…

MALICIOUS

PDF

95.0 KB Created: 2021-08-20 04:46:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: eeff507c7d6914ee52448ef90a646119 SHA-1: d79be54a9444b3d19ef77c67c3c5633877860c37 SHA-256: abd83e399ff820905fc8aaf11b6e88ea0a39d9b68890ad44ab3638e4c089cbc2
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, with many URLs pointing to compromised CMS uploads and disposable hosting, likely to redirect users to malicious content. No scripts were extracted, and the document body was unreadable, but the overall structure and URL analysis strongly suggest a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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 https://giriconsultancy.com/content_files/files/banev.pdf In PDF document text
    • https://www.tangelo.no/wp-content/plugins/formcraft/file-upload/server/content/files/1609daf0235390---7546806812.pdfIn PDF document text
    • https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/1f59a2d3737603966ea175f6f08aefb7/88125277271.pdfIn PDF document text
    • https://georgiamusicpartners.org/wp-content/plugins/super-forms/uploads/php/files/fab69da15f923bd7487fdcc8aae5a6b7/6927488627.pdfIn PDF document text
    • http://bahattinburyan.com/userfiles/file/zaxekeduzetatuso.pdfIn PDF document text
    • http://elencostruzioni.it/userfiles/files/88654188419.pdfIn PDF document text
    • https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/bf0a368e7c5287f48ea21305296bd6ad/gisuwezug.pdfIn PDF document text
    • https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/a72a70e98cab04eeb65949fdefe8b262/fozosesixasagobiradulibi.pdfIn PDF document text
    • https://ikima.fr/uploads/file/jonitukutexawenifipoz.pdfIn PDF document text
    • http://donkaew-furniture.com/ckfinder/userfiles/files/malikul.pdfIn PDF document text
    • http://refah4ter.info/basefile/hotelrefah4terir/files/tegekatoxaxuwividajiro.pdfIn PDF document text
    • https://srilangkapools.com/contents//files/87482372923.pdfIn PDF document text
    • http://brette-animation.com/userfiles/file/95628463261.pdfIn PDF document text
    • http://cjcounsel.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/vewezabolawixarela.pdfIn PDF document text
    • https://henklinders.nl/henklinders/upload/files/kafirevulitigataxate.pdfIn PDF document text
    • https://kultmotor.hu/images/files/34467433391.pdfIn PDF document text
    • http://conditum.nl/userfiles/file/74943280853.pdfIn PDF document text
    • http://mirandatutoringcentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608d2ad63341e---kawimizef.pdfIn PDF document text
    • http://tourister.kr/userfiles/file/munufafuxinuponeza.pdfIn PDF document text
    • http://tfwdynasty.com/clients/f/fc/fc55782506b94f933057639757072b2a/File/1248247409.pdfIn PDF document text
    • http://wonikqnc.com/upload/editor/file/1624521509.pdfIn PDF document text
    • http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/cc0080766b1f12cefe97be83dc5a409b/52755684523.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=does+fubotv+have+a+channel+guidePDF 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_off00010a71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A71 19652 bytes
SHA-256: 38092b94fdbb4167c390dc69d06809b608adf4129a37dfb858fdfc73b05140dd
font_01_sfnt_off00013c9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C9C 10960 bytes
SHA-256: e9281f96e52765a618c37cfd33a3087c1d1abf160f14bc1f5f82513844f0e302
font_02_sfnt_off000155d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x155D1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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