Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eb68a326f8c8449…

MALICIOUS

PDF

99.4 KB Created: 2021-08-13 18:29:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: b2206b392433d1f0e003cba5d69c3aab SHA-1: c2b8c95f18dc10a9e85d4d1aee0715cc7f313973 SHA-256: 1eb68a326f8c84494f0e4e3431fa626d581910b39f82c1aa22e32b72dc265109
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 a phishing trojan. It functions as a link farm, containing numerous URLs pointing to compromised WordPress sites and other disposable hosting. The primary purpose appears to be directing users to malicious content, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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=what+does+the+cane+represent+in+jekyll+and+hyde PDF link annotation
    • https://myhoorayhealth.com/wp-content/plugins/super-forms/uploads/php/files/80fk9h790mohp1bu7fgvf44iu2/pefazisikikabebugalawaf.pdfIn PDF document text
    • https://www.cibaospalaser.com/wp-content/plugins/super-forms/uploads/php/files/unslmqm6vpo8t15ip8d9r52mbp/57524905348.pdfIn PDF document text
    • https://pima-alarms.net/slicice/file/55069236862.pdfIn PDF document text
    • https://msr-hudsonproperties.com/wp-content/plugins/super-forms/uploads/php/files/f0edad4f04ea680e115074b933128af7/burigodewosan.pdfIn PDF document text
    • https://efficimm.fr/userfiles/files/noduzizazarejimiwuxep.pdfIn PDF document text
    • https://www.criteriainvest.com.br/wp-content/plugins/super-forms/uploads/php/files/hvuvp6ni91sbmdmm983chk703r/bogexusukureguxofipa.pdfIn PDF document text
    • https://makanbanyak.net/contents//files/46825463703.pdfIn PDF document text
    • http://aimic.com/userfiles/file/85602955144.pdfIn PDF document text
    • https://ecableapp.com/FCKeditor/FCKimgUpload/file/71091308865.pdfIn PDF document text
    • https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607962a22a628---16937748901.pdfIn PDF document text
    • https://west-holding.com/userfiles/file/kakufunilupedolegaxeviwev.pdfIn PDF document text
    • https://tkquiz.com/userfiles/file/nulevamakowunimonijeboval.pdfIn PDF document text
    • http://katheran.com/clients/55933/File/nutimapoviraf.pdfIn PDF document text
    • http://vincityhomes.vn/wp-content/plugins/super-forms/uploads/php/files/pacvdqd5hvfta7qjk0e17g227o/retixamavi.pdfIn PDF document text
    • https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075a98e91c82---fapovopowusisasipanurimu.pdfIn PDF document text
    • https://sherwoodchamber.org/ckfinder/userfiles/files/34931561112.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/95912006775.pdfIn PDF document text
    • https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/ifavnbb21cpldgsiecflujh967/70208841175.pdfIn PDF document text
    • http://uhy-th.com/image/upload/files/jifasokunifumobopomopa.pdfIn PDF document text
    • http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adac1fbceeb---72729694127.pdfIn PDF document text
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160736537ce00d---58379590285.pdfIn PDF document text
    • http://studiozammuner.eu/userfiles/files/66007565594.pdfIn PDF document text
    • https://aquatrustfina.com/userfiles/file/78117286734.pdfIn PDF document text
    • http://www.nagsa.es/ckfinder/userfiles/files/698471518.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_off00011f21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F21 17828 bytes
SHA-256: d9b13f265aa3056966e1307e82289b71fc352947323fc6549a8f0fadc695abb0
font_01_sfnt_off00014d96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D96 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000165ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x165AD 10940 bytes
SHA-256: c16100a6c71588da4b31042f9c9fd1b5b8185758c5cbd8d2a149c352a1471b04

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