Malicious PDF — malware analysis report

Static analysis result for SHA-256 00e3eaacf49b8ff2…

MALICIOUS

PDF

74.6 KB Created: 2021-07-16 05:08:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 3aed5839a9f7a786dc989f9f437304c8 SHA-1: 01b783d489016d84a6bff7b005a1389746eaff78 SHA-256: 00e3eaacf49b8ff26a5c410789ddb9e570924209a37d87b5bc3e54b02f7cfb80
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised WordPress upload directories. These URLs are likely intended to lead users to malicious content, such as phishing pages or malware downloads. The ClamAV detection and ML classifier strongly indicate malicious intent, consistent with a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9885

Heuristics 6

  • 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
  • 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://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160769d4d4cd91---82404951051.pdf In PDF document text
    • http://fence-alarm.com/userfiles/files/40083559085.pdfIn PDF document text
    • http://laptopplus.be/app/webroot/files/userfiles/files/83266003387.pdfIn PDF document text
    • http://giustizianuova.it/userfiles/file/dinivawupetobako.pdfIn PDF document text
    • https://howardsteeves.com/wp-content/plugins/super-forms/uploads/php/files/334daae5feebf3b1130352f4c0407c2e/35525580918.pdfIn PDF document text
    • http://vencedor.coop/images/admin/file/gapafumiratejugidel.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/33366834448.pdfIn PDF document text
    • http://uss100.com/clients/5/56/562308f4da1da23328cfd9e5c9f3e68f/File/26384333874.pdfIn PDF document text
    • http://forresterfamilyreunion.com/clients/c/cc/cc72bfd2512333311cc1ef5a4fdef90f/File/kivaxewovumiji.pdfIn PDF document text
    • https://betalinktech.com/blmedia/file/30112690223.pdfIn PDF document text
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f323318ad3---datuzajevude.pdfIn PDF document text
    • http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b7553c2879f---9086994358.pdfIn PDF document text
    • https://mkting.com.co/wp-content/plugins/super-forms/uploads/php/files/db10138aa204cd2d794eb99785ad193c/fokoxijufimuvepugowos.pdfIn PDF document text
    • http://roughriders66.com/clients/f/fa/fa96273273f04fd2a06feef12b1e4d70/File/32775536319.pdfIn PDF document text
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2121209410---momefoturunogejexojebefi.pdfIn PDF document text
    • https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/1608b81bda710f---2178938085.pdfIn PDF document text
    • https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f0f0b060d6---muzuvopilanaxu.pdfIn PDF document text
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/1974c761d9049e058fe7300208cb318e/5095071417.pdfIn PDF document text
    • http://www.asslar.de/downloads/96055625983.pdfIn PDF document text
    • https://sandalyecenneti.com/wp-content/plugins/super-forms/uploads/php/files/4t77jikeoi4ovgsh8kt0pc6r45/48365272227.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/060477c55056a725334d0b329e4cdd85/pajegufupelorolowuniza.pdfIn PDF document text
    • https://chupwo.com/editor_upload/file/8093643007.pdfIn PDF document text
    • http://www.urbanwaterways.info/files/2839894516.pdfIn PDF document text
    • https://www.vedaaz.com/wp-content/plugins/super-forms/uploads/php/files/f03ce38410118554d2e1176491d902ae/tutofusanepigupuju.pdfIn PDF document text
    • https://maisonforville.be/documents/file/basobu.pdfIn PDF document text
    • http://boldogelet.hu/media/83593681726.pdfIn PDF document text
    • http://ohdiabo.net/images/ckeditor/files/88017060418.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=kings+arms+filbyPDF 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_off0000c081.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC081 16636 bytes
SHA-256: 89b538c175e60f3cdcbb66f4a2acbfb998aabdcdda4246bfff78aa923166e6bc
font_01_sfnt_off0000ebc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBC1 10452 bytes
SHA-256: ec470c484dd1321ab3b6c33ea578cb6369044f9155af809230e2ff3882aea351
font_02_sfnt_off00010366.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10366 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1