Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e6ea1d9e2cc5bc7…

MALICIOUS

PDF

100.1 KB Created: 2021-08-18 17:21:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: cb37ffbb4df66a8b73ccf0b4e47d9903 SHA-1: 48044529c60368685c47e352c223cdd411c0544a SHA-256: 2e6ea1d9e2cc5bc7577977b578225eb4ce77341376e5f36735ee6f3e72650924
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many pointing to compromised WordPress sites and disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the nature of the embedded links and the PDF structure align with techniques used to redirect users to malicious sites, potentially for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9899

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.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16087728095eb7---37711739681.pdf In PDF document text
    • http://classicalgardenornaments.com/uplds/file/22142183912.pdfIn PDF document text
    • http://creativeindustries.ru/uploads/userfiles/file/dewebuwolebovurovaruk.pdfIn PDF document text
    • http://greenreunion.org/clients/f/fd/fd69eab1634eeea6368acebbe5d5cb0d/File/78877378998.pdfIn PDF document text
    • https://stpetejazz.com/wp-content/plugins/super-forms/uploads/php/files/1b5s3ifq9e8j5l3favt9dnhvrf/11200492574.pdfIn PDF document text
    • https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/799c90b412a4d8d50c838e66e50e8744/vedidokebediwebup.pdfIn PDF document text
    • https://vickers-electronics.co.uk/wp-content/plugins/super-forms/uploads/php/files/117ae6e8f28536b5e474d79baa8ce778/gotuxegekilugibebulipak.pdfIn PDF document text
    • https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607fadb5395bb---golowejadegomaxori.pdfIn PDF document text
    • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/1607fe325cd479---5027330109.pdfIn PDF document text
    • https://lawpropertyconsultants.co.uk/wp-content/plugins/super-forms/uploads/php/files/b4hnlku3riuvafcsdgj9j7a51o/63363553986.pdfIn PDF document text
    • https://ystechpro.com/nbloom/fckuploads/file/85888716788.pdfIn PDF document text
    • http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16085a16250f7a---xonitigukaba.pdfIn PDF document text
    • http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fa5abcacd56---84115043007.pdfIn PDF document text
    • https://smoothnomad.com/wp-content/plugins/super-forms/uploads/php/files/ollhdauno38a6gdcocnf3g41vk/dijidejiluxorisofijoza.pdfIn PDF document text
    • http://emeat.ru/var/files/xofepuvopube.pdfIn PDF document text
    • http://zhengfutz.com/v15/Upload/file/2021521429249704.pdfIn PDF document text
    • https://www.brightfieldbusinesshub.co.uk/wp-content/plugins/super-forms/uploads/php/files/3j9ho4iedk9716oh83vu8q8hg7/novavojoxan.pdfIn PDF document text
    • http://flirdining.com/uploads/files/78177651123.pdfIn PDF document text
    • http://appartenvue.net/appart/upload/images/robibexudizedotupafujojaj.pdfIn PDF document text
    • https://oversaslogistica.it/file/47524465904.pdfIn PDF document text
    • http://midiabyz.com/wp-content/plugins/super-forms/uploads/php/files/5129c1b8cc3927a778346fc4ec5e94a9/sowigosugetavejop.pdfIn PDF document text
    • https://semagro-msw.ru/pics/images/file/xisofifosefoxefisefowoze.pdfIn PDF document text
    • http://goergenpainting.com/clients/0/0d/0d1038892961fdbf96b6a8e7e8daca8f/File/6950938836.pdfIn PDF document text
    • https://oversaslogistica.it/file/32035027732.pdfIn PDF document text
    • https://powermailer.in/userfiles/file/nonutefepomu.pdfIn PDF document text
    • http://ahxxzx.com/userfiles/202105/file/pivajuwagaxugojefelobugod.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=parasha+de+la+semana+judaismo+hoyPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000112c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112C3 3312 bytes
SHA-256: fefaf3e7c2d4bec33501e91c64b79ba90449229b43e5bb437c662fcb689fd342
font_01_sfnt_off00012012.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12012 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013824.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13824 18324 bytes
SHA-256: 6cda6588274360d9a72f59ca1e73dd19bc415ba575db4d0c30229d97aeec6579
font_03_sfnt_off000166fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x166FC 10760 bytes
SHA-256: 6c4043aad22bc289ac9ee1f10985e4ebddc940f7c9534b219d665ce846dcc405

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