Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee2e239739e7e9f5…

MALICIOUS

PDF

169.7 KB Created: 2021-06-28 07:28:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-15
MD5: 520960432df1e30e36c80b3b61d53e48 SHA-1: 8cdcd2bab6437c93aa691028ba7961ce8f7550c3 SHA-256: ee2e239739e7e9f556e3d163bf9b306dfd9491e6502819d2bf63c90b0682d0ea
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics as malicious, including a ClamAV detection for 'Pdf.Phishing.Trojan'. The file functions as a link farm, containing numerous embedded URLs pointing to various domains, many of which appear to be hosted on compromised CMS platforms or disposable hosting. These links likely lead to phishing sites or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9689

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://crewmak.ru/uplcv?utm_term=pacific+trade+agreement PDF link annotation
    • http://dansensvenner.dk/imagesfile///30221309975.pdfIn PDF document text
    • http://consol.hu/images/uploadedimages/file/betob.pdfIn PDF document text
    • https://apexforestservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1d25d04f4e---bugan.pdfIn PDF document text
    • https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b460230febe---33204040445.pdfIn PDF document text
    • https://readxyz.org/wp-content/plugins/super-forms/uploads/php/files/20743c802172d0c22d603467af5ae45e/sakujefaroraxome.pdfIn PDF document text
    • http://palyavalaszto.hu/teszt/upload/file/jepazeroferi.pdfIn PDF document text
    • http://www.publicitymailing.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160945ec9b3d93---pakoxativebatuvukoketov.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/bf3ccea3f5c25253cd4a09865dcd3839/zobovizeropaxujisumivo.pdfIn PDF document text
    • http://billedbutikken.dk/articlefiles/file/37312851085.pdfIn PDF document text
    • http://xahscw.com/userfiles/file/lenafepobizasesusez.pdfIn PDF document text
    • http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160967eb0ef9e5---81616973425.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cee6873857f---finifipujamosila.pdfIn PDF document text
    • http://fobosgrunt.ru/files/ckfinder/files/mikijoxilevofupenuletof.pdfIn PDF document text
    • http://4grd.com/cmsimages/file/80457639792.pdfIn PDF document text
    • https://gfow.om/wp-content/plugins/super-forms/uploads/php/files/h9ba0jmoklkkc7n829qr1eetvk/poduwafaguvil.pdfIn PDF document text
    • http://tienhasteel.com/app/webroot/upload/files/56431049971.pdfIn PDF document text
    • http://bazatalty.pl/wp-content/plugins/super-forms/uploads/php/files/4185308f7783b2cead2faa88c6110a7b/23890544977.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/md8dpll38tckght4fu6ddd5594/jiwibolodi.pdfIn PDF document text
    • https://hssanesteban.cl/files/vakaserewotepusej.pdfIn PDF document text
    • https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/d57204d908d899044c6207b59672e213/zopoboliponafoli.pdfIn PDF document text
    • https://happycustomerservice.com/wp-content/plugins/super-forms/uploads/php/files/42ceb9ac1869b16b62725fcecd5d3ee3/vopetavorisaxe.pdfIn PDF document text
    • http://guides2alpes.fr/uploads/file/livipadizemasudem.pdfIn PDF document text
    • http://www.sevenchurchestour.net/seven/wp-content/plugins/formcraft/file-upload/server/content/files/16085c765d475b---25707529600.pdfIn PDF document text
    • https://www.keystonecare.co.uk/wp-content/plugins/super-forms/uploads/php/files/15ca5be0bd726fb556e739efc7ac93ff/dazuvixugipo.pdfIn PDF document text
    • http://sieckultury.pl/wp-content/plugins/super-forms/uploads/php/files/ac1ed76c01768f4e98f32757cf854718/32712554236.pdfIn PDF document text
    • http://myucpb.net/userfiles/file/divuram.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_off00023747.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23747 10488 bytes
SHA-256: 3459cc63d0e8215c734c353983aa89b2f3c8ea84d90dc5f079691b32f47a57c6
font_01_sfnt_off00024ee3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24EE3 19140 bytes
SHA-256: 1b20d2c0b333450a63385d621402ff3ce2f8c3b25d7991fe4517cc22d09f6230
font_02_sfnt_off00028100.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28100 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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