Malicious PDF — malware analysis report

Static analysis result for SHA-256 e74f05fcb4ff54a3…

MALICIOUS

PDF

89.5 KB Created: 2021-08-07 18:50:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: ce8a9e11d318f8eaee7aa2ea347d02e6 SHA-1: 30bf80a29f4c1bf979c551502f03bd20549e016a SHA-256: e74f05fcb4ff54a3eef78ff3b698ff8fed404efb1116515c07069db8373c3cd1
164 Risk Score

Malware Insights

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

This PDF was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains numerous links to compromised WordPress upload directories, suggesting it is part of a link farm designed to distribute malicious files. The presence of a visual download button further supports a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9905

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://daluxerealty.com/wp-content/plugins/super-forms/uploads/php/files/dh9i839aib9mjhc8hv6k1t2pa7/sozimibe.pdf In PDF document text
    • http://arohitourandtravels.com/userfiles/file/28834782641.pdfIn PDF document text
    • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/r89in0rst7jihlsll5asln2rt0/84741883858.pdfIn PDF document text
    • http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/160e28a5bee003---vedudekanezotubofixalube.pdfIn PDF document text
    • https://dispomydeal.com/wp-content/plugins/super-forms/uploads/php/files/38272d85af37d513d230647fd06b816d/xugibavode.pdfIn PDF document text
    • http://dom-nenilovo.ru/wp-content/plugins/super-forms/uploads/php/files/edf097b16b6fab6bf39ddabc6c237e80/99836095869.pdfIn PDF document text
    • http://ahrestygz.com/userfiles/files/20210617_202512.pdfIn PDF document text
    • http://meadspool.com/clients/8/8e/8e46726fd42f39913d2349bbdb4e70c4/File/rezagozalubun.pdfIn PDF document text
    • http://speckrepeg.by/UserFiles/files/taderudadidijikagazek.pdfIn PDF document text
    • https://genia-groupe.fr/images/files/18189951222.pdfIn PDF document text
    • http://hjtech.org/admin/upfile/file/75600550286.pdfIn PDF document text
    • http://skogsformedling.se/bilder_umeny/File/85933908033.pdfIn PDF document text
    • https://gtselect.fr/ckfinder/userfiles/files/59769775131.pdfIn PDF document text
    • https://absoluteanytime.com/media_file/files/files/nuxazi.pdfIn PDF document text
    • http://learnersdigest.org/userfiles/file/zazulawevona.pdfIn PDF document text
    • https://www.wflorlando.com/wp-content/plugins/super-forms/uploads/php/files/ff0965a9db2df59d770bd049bd5adf54/rexarebozuf.pdfIn PDF document text
    • http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ec4054c4d5b---49675598117.pdfIn PDF document text
    • https://independentmusicleague.com/wp-content/plugins/super-forms/uploads/php/files/fdade3f46f77729889cb0212b58ba55e/bumufifixekeno.pdfIn PDF document text
    • https://brandonsmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/e7gags1qa6bh5knmddoqf14gq4/24411350125.pdfIn PDF document text
    • http://hrt-foto.hu/_user/file/66103184244.pdfIn PDF document text
    • http://cluboutletmoto.net/campannas/file/88453305763.pdfIn PDF document text
    • https://rosenstein.lu/userfiles/files/mirowulimazamuwufaw.pdfIn PDF document text
    • https://cplastik.com/data/cms/file/datijopozederubozexofiwo.pdfIn PDF document text
    • http://tv-sat.cz/userfiles/file/15768990658.pdfIn PDF document text
    • http://dlt-nkp.com/fileupload//file/nulovub.pdfIn PDF document text
    • https://phuquiland.com/upload/files/6913312540.pdfIn PDF document text
    • http://madmojo.com/fckupload/file/64797236319.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=driver+webcam+samsung+np300e5mPDF 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_off0000f295.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF295 19784 bytes
SHA-256: b1076d631861b374e062077fbc0d3de231c9aa7be1bfffa91fe5afa02912ac63
font_01_sfnt_off000124fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124FC 11276 bytes
SHA-256: eec4802ea0f06a8fdcbb5ca9064e0b3b6e37193c7da1bfce6e5a48b341373a37
font_02_sfnt_off00013f5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F5B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1