Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5b802b1f93b5ad7…

MALICIOUS

PDF

90.9 KB Created: 2021-07-20 14:18:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 62727ce9556d0b77956feca82249600e SHA-1: 09209e8a53bef24add3c9869b2bdd3151dc56780 SHA-256: a5b802b1f93b5ad7a39a96234d5883a0ed091a18e2f8adf1f0fb3d0a6f888bc6
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many pointing to compromised WordPress sites and disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the nature of the embedded links and the PDF structure suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

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
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://thehero88vip.com/ckfinder/images_store/files/popazesogoromi.pdf In PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160ad148f276c4---mijutonolevapokomemo.pdfIn PDF document text
    • http://magyaringatlanadatbazis.hu/dev/_user/file/wafor.pdfIn PDF document text
    • http://www.northern-japan.com/image/upload/File/nogunixipirazuriw.pdfIn PDF document text
    • https://lostsoulsmemorialnj.org/wp-content/plugins/super-forms/uploads/php/files/174f78e8237ec992422e6c558ead53e2/fugivurutinebejebuj.pdfIn PDF document text
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/73rd14lb9i6s54ptjnabmva2q0/77334377119.pdfIn PDF document text
    • http://mdsalon.ru/img/lib/file/55962506713.pdfIn PDF document text
    • https://wscnaturalhealings.com/wp-content/plugins/super-forms/uploads/php/files/a3fbc12b84907fbeba696cfaf75ff852/8009322135.pdfIn PDF document text
    • http://bubblesoflove.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a95b8645976---92811461746.pdfIn PDF document text
    • https://burstallconrad.com/editor_files/file/68275035107.pdfIn PDF document text
    • http://al-bandak.com/userfiles/file/migigixovev.pdfIn PDF document text
    • https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/afb5632c9951b6dc54e4cf12ccc641c7/niveto.pdfIn PDF document text
    • https://rclurie.com/wp-content/plugins/super-forms/uploads/php/files/c90999753829e5ac24360b9eca1d17d8/12644727931.pdfIn PDF document text
    • http://mimarkamilozkartal.com/userfiles/files/pivizu.pdfIn PDF document text
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d738620f3d4---jiwugaxibufesenepagejiwo.pdfIn PDF document text
    • http://lpkgoodframeupvc.com/userfiles/files/35520092403.pdfIn PDF document text
    • http://emurus.jp/userfiles/file/posetibimolobopeti.pdfIn PDF document text
    • http://2ds-creations.fr/userfiles/file/37062554309.pdfIn PDF document text
    • http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c9bd858a07d---78645755205.pdfIn PDF document text
    • https://amatnieks.com/pictures/image/13518139216.pdfIn PDF document text
    • https://wegofa.com/userfiles/file/lobuxagenizorikeburel.pdfIn PDF document text
    • http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c6a73ebe5ba---tarevazudozokaratixus.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/1klnbpageu168ie4du4qjolr83/13292420032.pdfIn PDF document text
    • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/co6rftgq3tq7rqju4bmgef3sk7/pajogapujixotipe.pdfIn PDF document text
    • https://aravlicraft.com/cmsCart//upload/file/zerekubapekufowimidukifex.pdfIn PDF document text
    • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/82ea2aba4fe644712c259dc086d35d4d/18074589610.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=how+to+export+email+as+pdfPDF 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_off0000fdd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDD0 10732 bytes
SHA-256: e4f856eca1e820c67a5784f53cf766d71d24568aa8838954841846791b81a12b
font_01_sfnt_off00011686.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11686 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012e98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E98 18044 bytes
SHA-256: 9116c1299a9e0b0d76ea0ea979af88fdc9b8b85b636a1a58ce7af60c813c2f9a

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