Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dfbba8dc7d44b8d…

MALICIOUS

PDF

88.7 KB Created: 2021-08-20 08:09:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: d9ba045a35d82522b6da246df1e607e9 SHA-1: 454533cfb058fe30b22a345732bfc225c069cf56 SHA-256: 0dfbba8dc7d44b8df83cc38c1d14c6733db54d0dd225afef00d2cebe076d54ea
154 Risk Score

Malware Insights

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

The PDF contains a link farm directing users to multiple distinct hosts, many of which appear to be compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to lure users to download further malware or engage in phishing. No scripts were extracted, but the structure and URL patterns are indicative of a malicious document dropper.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6672

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fe98837c12---xafiseve.pdf In PDF document text
    • https://www.mixedclass.com.au/wp-content/plugins/super-forms/uploads/php/files/k65tv205blvcfh2a3pj5jdmvr9/dekut.pdfIn PDF document text
    • https://nowackleverkusen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bf1524ce030---jawabo.pdfIn PDF document text
    • http://nwmanagement.ru/generic/uploaded/file/nugijotilanof.pdfIn PDF document text
    • http://calisnt.com/uploads/files/nufaxosaxi.pdfIn PDF document text
    • https://mosconi.net/userfiles/file/sojijugamazo.pdfIn PDF document text
    • https://www.azulejositurry.com/wp-content/plugins/super-forms/uploads/php/files/vqglsr2at2jqnku95rhe7s7am2/49808546150.pdfIn PDF document text
    • https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160753fe1add74---82073758518.pdfIn PDF document text
    • http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c96caee66d---fibivugili.pdfIn PDF document text
    • http://skrabl.pl/www/rpbd/fck/file/vufijosipobekefufoburipa.pdfIn PDF document text
    • https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/c5e91edf9f4f93a3b1658d1186326726/92571384700.pdfIn PDF document text
    • https://contabil-fiscal.ro/mm/file/nipagulonavabigopasud.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a27e46a0252---zisasis.pdfIn PDF document text
    • https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/d3a5981bf0c5e8cef3f513bc2444f098/tojibemilatowota.pdfIn PDF document text
    • http://toyteepee.com/uploadfiles/file/210517024548045925b0dnzh.pdfIn PDF document text
    • http://avvocato-callegaro.it/public/file/wifufofirifirepoxivo.pdfIn PDF document text
    • https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/a75a4526fa52490874ca2e4a703a5545/tafavureligewav.pdfIn PDF document text
    • http://gangwonbnb.com/FileData/ckfinder/files/20210720_67882EB00A9D4462.pdfIn PDF document text
    • http://suportti.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fd2e7686b4f---82864637671.pdfIn PDF document text
    • http://lifemartrealestateconnect.com/wp-content/plugins/super-forms/uploads/php/files/oj4vvtqogfh4orgcnaa72n1907/bebamamulikiwapafol.pdfIn PDF document text
    • http://hyundaihungthinh.com/uploads/images/files/76712448921.pdfIn PDF document text
    • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079d4b5732c8---zebajene.pdfIn PDF document text
    • http://sqc.jp/user_data/editor/ckfinder/core/connector/php/upload/files/genutuweza.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/5fa4e6077aa82d292a60caceb375ab18/vupinidemejeg.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=togaf+9+foundation+study+guide+pdf+free+downloadPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE17 11104 bytes
SHA-256: 0c62cf7a13c0a919bcd1163a8cc80cd8a4fef83dbcba60c132002b5c43d3130c
font_01_sfnt_off0001080b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1080B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001201d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1201D 17884 bytes
SHA-256: 32f8a44e0766b31e348a6209e4c7a474bb961edac7c49fdf29d2a08cdda7ea7e
font_03_sfnt_off00014f76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F76 16068 bytes
SHA-256: 6d636ebcb28a43c11a0b96216d988d0aaa25e428b847d4e039b2a2a6b6e27b6d

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