Malicious PDF — malware analysis report

Static analysis result for SHA-256 592f846568960b5b…

MALICIOUS

PDF

92.9 KB Created: 2021-07-02 00:00:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 82d61db522fa278cfc7be5d8d2b9dbba SHA-1: b9d58bace3114dcd986bd226d233775a8b76742a SHA-256: 592f846568960b5bdfe8fe3b33c6ce4727b5bdcdd5a05f53e08c7b0f8d8df545
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious. It contains numerous links pointing to compromised WordPress upload directories and disposable hosting, suggesting a phishing or malware distribution scheme. The presence of external URIs and link farm patterns indicates an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9935

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://garglob.ru/uplcv?utm_term=the+bully+geography+1 PDF link annotation
    • https://bibliothequedesarts.ch/ckfinder/userfiles/files/93613206980.pdfIn PDF document text
    • http://primebrokeragetx.com/ckfinder/userfiles/files/98137714665.pdfIn PDF document text
    • http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/6mifh7m9hmuk03dd4fktlo9o4j/wisegepametulurosi.pdfIn PDF document text
    • https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/c7b03441bbd8650a5a800c21a7747da1/31045930352.pdfIn PDF document text
    • http://kartywspomnien.pl/uploads/assets/file/zimurivigiveli.pdfIn PDF document text
    • https://www.finestkindcharter.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f3af8a80b4---jememuvajetubemibenizuvum.pdfIn PDF document text
    • http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9e805e64e8---72155865856.pdfIn PDF document text
    • https://cristiandellavedova.com/wp-content/plugins/super-forms/uploads/php/files/nrpdjff48ocj5fmurt5gsm2qh3/27954407283.pdfIn PDF document text
    • http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078408ec5e60---84704255236.pdfIn PDF document text
    • http://salinasouth.com/clients/11073/File/99151184619.pdfIn PDF document text
    • http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/t0ktr2fgum4pm0683lv4dg8s86/rusowal.pdfIn PDF document text
    • https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/16072c471ac9d7---pemag.pdfIn PDF document text
    • http://interel-rus.ru/test/sites/default/files/file/wonaboluxavawipegakuwi.pdfIn PDF document text
    • https://doellefjelde-mussemarked.dk/images/newsmail/file/90632745585.pdfIn PDF document text
    • http://amphorabeautyclub.com/campannas/file/kugebemedetixamuluxutigab.pdfIn PDF document text
    • https://earplighting.com/wp-content/plugins/super-forms/uploads/php/files/6c2ec0ccbc7f628291b56c1ac234e1dd/risijifumometaruzakuzugu.pdfIn PDF document text
    • https://greenturtleproductions.com.au/wp-content/plugins/super-forms/uploads/php/files/a0f8bcb62f14f30e367af56c57c7ae12/78399617485.pdfIn PDF document text
    • http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a94665a099a---37641054474.pdfIn PDF document text
    • https://ecomassage.pt/wp-content/plugins/super-forms/uploads/php/files/i5s1195tbijo3gp0d136td6408/zadekonizaxuve.pdfIn PDF document text
    • http://oilandgaswork.com/userfiles/file/penowoberekevume.pdfIn PDF document text
    • https://uleshuzataruhaz.hu/files/file/45156269683.pdfIn PDF document text
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092c6eb14136---dapufud.pdfIn PDF document text
    • http://espacioschillout.es/images/admin/file/31726181225.pdfIn PDF document text
    • http://kotolantopeni.cz/file/5481522722.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_off00010b7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B7F 16676 bytes
SHA-256: c01d2eac05cb7b64a61bd8eacb59a7e848d076a4674bcb29cdd944cb1590eef3
font_01_sfnt_off000136d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136D2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014ee9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14EE9 10436 bytes
SHA-256: 1018bd7826015eb2c6301fca8753ddb32a74fda6010e31ce977d40cd0baebae1

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