Malicious PDF — malware analysis report

Static analysis result for SHA-256 320c349b0e8ac2e0…

MALICIOUS

PDF

83.8 KB Created: 2021-09-17 23:50:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 26f41326a3c7a29a2ff583c005f21aaa SHA-1: 468754eaa7d5fd0ab10bc28286e6a2b0f619a5ae SHA-256: 320c349b0e8ac2e0b1145e3a4620cf1be13c7a641384f48929191e6163aa35b1
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 websites or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery. The file's structure and URL patterns are consistent with a malicious PDF used as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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 http://exdebt.bg/userfiles/file/85383827528.pdf
    • http://moveworldtogether.com/datas/files/75753367097.pdf
    • http://residencelesaline.it/userfiles/files/zedezigorob.pdf
    • https://www.taxiserviceh24.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135061a7cc17---60519102898.pdf
    • http://realfootball.gr/userfiles/file/6215154567.pdf
    • https://stotex.rs/files/nanexubunawosagolu.pdf
    • https://themodernla.com/wp-content/plugins/super-forms/uploads/php/files/fdd22c5df9acddebee3d85cac8a74e71/fonow.pdf
    • http://fsgpj.com/upfolder/e/files/20210901095758.pdf
    • https://www.weboonline.com/ckfinder/userfiles/files/xokerudenizojikefidusegu.pdf
    • http://signexpowholesale.com/project-new/christianbook/upload_images/file/susirelijamirilap.pdf
    • https://www.techsrollout.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613dc0ae6e325---losiker.pdf
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d33c0f244b---sovakatepopiz.pdf
    • http://landpas.pl/upload/file/97685359446.pdf
    • http://rotarycochinharbour.org/ci/userfiles/files/movowasaboradasomev.pdf
    • https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/acc51c87652503c8a0d7ca1b0be10ce2/20194776446.pdf
    • http://joyear.com/ckfinder/userfiles/files/85730778551.pdf
    • http://castudio.eu/userfiles/files/27463431121.pdf
    • https://pasarant0g3l-turbo-h1t.com/contents/files/99152563988.pdf
    • http://qdjshg.com/files/file/buwuvogoj.pdf
    • https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/ef5e55a29302f5e6f550adba11416697/4300705359.pdf
    • http://csaladiegyteruautok.hu/userfiles/files/85093134824.pdf
    • http://iqlacpro.vn/emotive/upload/files/47374681157.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=theory+of+justice+by+john+rawls+pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e079.bin
74af8074adf700683b880cc8004367ee410dc66cb1119fe4436bf3ef00cfc898		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE079 11252 bytes
font_01_sfnt_off0000faaa.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFAAA 16792 bytes
font_02_sfnt_off000112bc.bin
a79c30ac6d0dcf6340a43a00b036f0a2b4849e0dc7db07a8f4f42c9bc57eb2aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x112BC 18084 bytes

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