Malicious PDF — malware analysis report

Static analysis result for SHA-256 55c32b5ae114c30c…

MALICIOUS

PDF

82.5 KB Created: 2021-09-01 00:28:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: b210b02f462c7acfbac42d5c8cd4e85c SHA-1: a05e8ff8303e807def481dcfca29ecfc8b12ab55 SHA-256: 55c32b5ae114c30c42ddc56da0c9da76bfea1cee5560f01df1c27d295b33c4e6
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160be3fe708446---45566857538.pdf In PDF document text
    • http://www.ekoforte.com/upload/file/3115698079.pdfIn PDF document text
    • https://greshamgilessalon.com/wp-content/plugins/super-forms/uploads/php/files/ff33f003d1a0d1e441c8c7a5a5f7ae22/lokuralelegesizavug.pdfIn PDF document text
    • http://byecook.com/ckupload/files/99260457302.pdfIn PDF document text
    • http://walkandwagforveterans.com/clients/9/96/96cc06f6b2a5429c1325f0b535cddba6/File/tugixuzo.pdfIn PDF document text
    • http://ilovechardonnayhills.com/userimages/83703070324.pdfIn PDF document text
    • https://aspaeng.com/files/image/files/11772724687.pdfIn PDF document text
    • http://accapierre.it/userfiles/files/didedeleropabemabuteku.pdfIn PDF document text
    • https://hamasataccessories.com/userfiles/files/robasemabi.pdfIn PDF document text
    • https://karinbentum.nl/uploads/file/16060414703.pdfIn PDF document text
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/3bd91bebc00efd25aaa7854c6be357c6/67039232151.pdfIn PDF document text
    • http://www.deopendeur.org/imgUser/file/41946926035.pdfIn PDF document text
    • http://webinside.pl/userfiles/file/pefixefagijowavinututifu.pdfIn PDF document text
    • http://lube-stc.com/ckfinder/userfiles/files/tafokufunazifibejov.pdfIn PDF document text
    • https://davaocarrental.com/images/file/pofiruvizixil.pdfIn PDF document text
    • http://big-blue-bus.com/pics/fotos/1/file/maxuda.pdfIn PDF document text
    • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c0a085cf09---koxivepuzemimowuzo.pdfIn PDF document text
    • http://easternsheep.by/app/upload/file/tewivavezididete.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607c1c1ca268a---nezidekubakorukitofapawib.pdfIn PDF document text
    • https://fultoys.com/userfiles/fosipewug.pdfIn PDF document text
    • http://hoondb.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bf3491f932---linivim.pdfIn PDF document text
    • http://cukrarska-vyroba.cz/UserFiles/File/dizejixaputisorunarexuwuj.pdfIn PDF document text
    • http://haileylusk.com/clients/e/e6/e6412a3df854040bfb282c4f37eddf02/File/43544843937.pdfIn PDF document text
    • https://functionalmovement.gr/wp-content/plugins/super-forms/uploads/php/files/f9f9a26c78f08a62b4381a66fdd5f8c0/gudonexosat.pdfIn PDF document text
    • http://www.c-l-r-p.com/admin/ckfinder/userfiles/files/jetajowesejavede.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=free+download+miracastPDF 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_off0000e047.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE047 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f85e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF85E 10596 bytes
SHA-256: 8e1e93e6efb9554a86c58f5a21ff3edaf02a02452c12cd4c74a8157335d27eb3
font_02_sfnt_off0001108f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1108F 17096 bytes
SHA-256: 9aa5c6c9e4bd3ab40e9392776634e5bb19dd07acf34d71fe0e6c4d4d08aa5225