Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d5ab92ee2abbf09…

MALICIOUS

PDF

98.8 KB Created: 2021-09-16 05:11:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: d86010fd7808e97a4b4005d76f493878 SHA-1: 13bb128d1a3175c30b24857aa874403a0d8188b7 SHA-256: 6d5ab92ee2abbf09d56e36d7971f8cb4d4a4b5c5f312480d9091b0e06021174f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9784

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 https://synerhu.ru/uplcv?utm_term=ethos+pathos+logos+definition PDF link annotation
    • https://likeevent.it/writable/public/userfiles/file/32623031228.pdfIn PDF document text
    • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137d2812668e---gogamudugulupunum.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/af2fbd7697e30a54003f41a4353ae32c/daxanavenepefibiwig.pdfIn PDF document text
    • http://xn--zb0bw3kv4s8mn.com/upload/fckeditor/file/tivalamidiluxemetibopu.pdfIn PDF document text
    • https://hideab.se/tc/Mediagalleri/file/sopewixexisamuvodene.pdfIn PDF document text
    • https://www.dentaltaxpros.com/wp-content/plugins/super-forms/uploads/php/files/2d44104c1ad8b6639efd64d169796bea/zevikanofamexiv.pdfIn PDF document text
    • http://rc-modeller.se/images/file///towejafovuraxadigan.pdfIn PDF document text
    • http://spartapr.com/images/upload/file/welezedixuwotovepeze.pdfIn PDF document text
    • http://behtarinekhodetbash.com/files/files/sudikimomilifutumujo.pdfIn PDF document text
    • http://e-baze.lv/images/site/file/48733902163.pdfIn PDF document text
    • https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/ca46437ae34c6238f0fbf82aa4203e6f/kiwit.pdfIn PDF document text
    • http://vaness-sens.fr/ckfinder/userfiles/files/15172574525.pdfIn PDF document text
    • http://archetipoingegneria.it/userfiles/files/24070298247.pdfIn PDF document text
    • https://blogsma.com/files/4967169490.pdfIn PDF document text
    • http://2safe4u.cz/UserFiles/File/pewofifivoveboziponuv.pdfIn PDF document text
    • http://vizugy.hu/uploads/files/files/wiwonarapokuselober.pdfIn PDF document text
    • http://emekyesiltepe.net/images_upload/files/peluvedo.pdfIn PDF document text
    • https://fnb-concepts.com/images/uploads/files/towewidutebukijose.pdfIn PDF document text
    • http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/161428cae4d90c---94563975351.pdfIn PDF document text
    • https://udruga-invalida.hr/files/22924720549.pdfIn PDF document text
    • http://nghieuphong.com/upload/files/ledegafakakekij.pdfIn PDF document text
    • http://slmj8.com/data/userfiles/files/moximukupen.pdfIn PDF document text
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613db30879b50---22609797412.pdfIn PDF document text
    • http://strandedtattoo.com/file/77222637887.pdfIn PDF document text
    • http://fatamorgana.fr/uploads/assets/file/butiru.pdfIn PDF document text
    • http://agedwedfjtj.pretty-match.com/upload/files/50521787029.pdfIn PDF document text
    • http://www.fashiongale.ro/userfiles/files/kuxetilujukedapufewuv.pdfIn PDF document text
    • http://architettoannalisatinelli.it/userfiles/files/29143732381.pdfIn PDF document text
    • 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_off00011b94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B94 19148 bytes
SHA-256: eb33283f9de5c2e24ae52b037e1d292aff1802b63c3701f26c651d7911f5761e
font_01_sfnt_off00014d2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D2A 10660 bytes
SHA-256: 342d1d26aea0d765188c9679647517b21f7a2995c86d4aac606e4fb26154ea82
font_02_sfnt_off0001654f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1654F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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