Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e91451e0233aeaf…

MALICIOUS

PDF

72.8 KB Created: 2021-09-06 07:27:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 57d515ee9d4a2ddccc090d056d1acef3 SHA-1: db39f57080916267e8863f0500dfd964670b536a SHA-256: 0e91451e0233aeaf8bdb170b2cfdfb7ef84904bac3fac40da35d3a421b287441
156 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to compromised WordPress sites acting as link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically identified as a phishing trojan. The presence of link farms suggests an attempt to direct users to potentially malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9840

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://www.lightingandhvacexpo.com/wp-content/plugins/super-forms/uploads/php/files/cfa6544da4836e62b472779f455dc2c9/zowuleforudefoz.pdf In PDF document text
    • http://anpharma.net/upload/files/83342269098.pdfIn PDF document text
    • https://www.swx.global/wp-content/plugins/super-forms/uploads/php/files/b3069f7320a0c567d345909b11dd1f11/22914020247.pdfIn PDF document text
    • http://vitrine-prof.com/files/10053727076.pdfIn PDF document text
    • https://dineflon.com//files/29295354867.pdfIn PDF document text
    • https://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a15205b055f---63779757909.pdfIn PDF document text
    • https://personalloan2u.com/wp-content/plugins/super-forms/uploads/php/files/8de0918492b406583a34fb87a3fa1d2a/18381436204.pdfIn PDF document text
    • https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/a022ba0e4abb7d09e9478bead3c69303/44466923732.pdfIn PDF document text
    • https://vinacomvietnam.vn/uploads/news_file/rovopen.pdfIn PDF document text
    • https://thesmithgrouphouston.com/wp-content/plugins/super-forms/uploads/php/files/0ba09f2b30ab2539dd5f69dccea5e363/16539289878.pdfIn PDF document text
    • https://makemycake.gr/wp-content/plugins/super-forms/uploads/php/files/q7hhr4etgj7nk6g9uhmna3l0ep/89789688195.pdfIn PDF document text
    • http://duquenne-moteurs.fr/webroot/upload/files/gemasogipozoforo.pdfIn PDF document text
    • http://ranaghatpchsschool.org/userfiles/file/todeduvenube.pdfIn PDF document text
    • https://artenika.pl/fck/file/novaburilovoxajesiwi.pdfIn PDF document text
    • https://astek-telem.fr/userfiles/file/45616673516.pdfIn PDF document text
    • http://piqiso.ru/userfiles/file/woxafugivimusezi.pdfIn PDF document text
    • https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/09n9hocit719npja3ns3ed1dqd/26628369941.pdfIn PDF document text
    • https://tedvandergulik.nl/userimages/file/wiragixukaxewifexexufi.pdfIn PDF document text
    • http://washburnhs64.com/clients/f/f7/f75dc469904bb25755ea64d7551c4a95/File/87450274961.pdfIn PDF document text
    • http://barrarioservicos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160766cee7cdac---fisabamet.pdfIn PDF document text
    • http://newcityhk.com/userfiles/17359541522.pdfIn PDF document text
    • https://pluviaterra.mx/wp-content/plugins/super-forms/uploads/php/files/374ba20ecaa7ad211602efdf580749c2/70807339736.pdfIn PDF document text
    • http://studiotipaldo.com/userfiles/files/nomizekazireripafedef.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d52acf9a50f---45377564062.pdfIn PDF document text
    • https://www.rydalmereprestige.com.au/wp-content/plugins/super-forms/uploads/php/files/nccrfajkg76bb1792n2e6ss36r/kiwuka.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=raycon+x90+titan+manualPDF 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_off0000bb80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB80 10644 bytes
SHA-256: 84e093bff4da300c649f20aa6f8d59cc8c39f9df6c3ec951a382c465ff3ff100
font_01_sfnt_off0000d3f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3F8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ec0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC0A 16124 bytes
SHA-256: e9119680bb08047291cca5dcfd7f5338c8f0e2619b01e94766699f9e3e8db150

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