Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eb7da529b93c5b5…

MALICIOUS

PDF

101.9 KB Created: 2021-07-16 03:26:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 1380342038838df4e3f4aa169e959e82 SHA-1: e3d419e892ce8acea630160bda9f6fe477e64a9e SHA-256: 0eb7da529b93c5b51a8cb222703718b5d4285fcdc7b20c0d8e39dfb032a9ece1
184 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript and multiple external URIs, indicating it is designed to redirect users to potentially malicious websites. The heuristics suggest a link farm hosted on compromised CMS uploads and disposable hosting, with one URI pointing directly to an IP address. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9923

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://inwebjor.ru/uplcv?utm_term=friesland+things+to+do PDF link annotation
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076b99dc8825---9381816788.pdfIn PDF document text
    • https://eastmanllc.net/ckfinder/userfiles/files/6640114153.pdfIn PDF document text
    • https://citytrafik.nu/images/file/kusewalabikop.pdfIn PDF document text
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/1609b4bb51d651---fexutuzoko.pdfIn PDF document text
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e443d5642c---93178498919.pdfIn PDF document text
    • http://fantalife.nl/userfiles/file/82383715275.pdfIn PDF document text
    • https://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/d0697ddc9b115f20f9d94ac68f5f34dc/bazur.pdfIn PDF document text
    • https://binarbaidfabrication.com/public_html/userfiles/file/12308272863.pdfIn PDF document text
    • http://blow-w124.com/js/upload/files/bolepefivapogomoj.pdfIn PDF document text
    • http://popnmusic.fr/userfiles/file/24027376689.pdfIn PDF document text
    • https://demircanticaret.com/userfiles/file/sidutimoxozijad.pdfIn PDF document text
    • http://157.230.241.115/image/upload/File/90844404234.pdfPDF link annotation
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16072d7b1615ec---zelupexedukerewaw.pdfIn PDF document text
    • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160910d2eca555---sigemosugevupobag.pdfIn PDF document text
    • http://asirius.su/wp-content/plugins/super-forms/uploads/php/files/3fa1130b19f893591fb8e9b6d042e14b/witofid.pdfIn PDF document text
    • https://photojet.bg/userfiles/file/72142035830.pdfIn PDF document text
    • https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c5d38116d9e---zoniwozitokufakodumu.pdfIn PDF document text
    • https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/e5353b47de900829d90f58e493feb6fc/maporinumobepa.pdfIn PDF document text
    • http://fitviewer.de/files/file/80928669989.pdfIn PDF document text
    • http://www.homefacelifters.com/wp-content/plugins/super-forms/uploads/php/files/b4eb90258769682032c68e5681007691/bifiki.pdfIn PDF document text
    • http://thuduchouse.vn/pics/file/sagebegulemopuxekenituf.pdfIn PDF document text
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/160993abe5c4c9---siferuwapomofazafi.pdfIn PDF document text
    • https://agermag.ro/mm/file/ripegatesogizugaja.pdfIn PDF document text
    • http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/vpv3od7gbucd9irq4a8ojcv077/webimexajobego.pdfIn PDF document text
    • http://chongros.com/userData/board/file/61328451401.pdfIn PDF document text
    • 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_off00012a69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A69 10504 bytes
SHA-256: 21ba39ab5a36e72a30d9bc73f1aaca29381fc81e05c5538efbe623649dd5507d
font_01_sfnt_off000141f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141F8 18760 bytes
SHA-256: 3d2ded5c4e7aa892d53854305761e1c2b6ab7ce0f297c287f25eb3ccbea72589
font_02_sfnt_off0001728c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1728C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1