Malicious PDF — malware analysis report

Static analysis result for SHA-256 75fcd501ab0b1bbd…

MALICIOUS

PDF

94.0 KB Created: 2021-09-05 14:33:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 5bac26433b0242cc789816f377543901 SHA-1: 292f927586d6cfcbd6257a910c9667d4bcb2c882 SHA-256: 75fcd501ab0b1bbdda21415349e653647f33d1ad97435847c3676433e1951214
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The sample is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains a link farm pointing to compromised WordPress sites, suggesting a phishing or redirection attempt. The heuristic 'SE_PAYMENT_REDIRECT_LURE' indicates the document's content likely aims to trick users into changing payment details, a common tactic in business email compromise schemes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://bilbox.es/wp-content/plugins/super-forms/uploads/php/files/311d0d8fc67975f0e58e809c38877009/48670737630.pdf In PDF document text
    • http://richmediahouse.com/admin/uploads/file/xadidotinozomaramud.pdfIn PDF document text
    • https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae9d6642f0b---24229404011.pdfIn PDF document text
    • https://ecoverservice.be/gallery/file/tibopoxuzukejabop.pdfIn PDF document text
    • https://travolution.travel/wp-content/plugins/super-forms/uploads/php/files/7b9f145a86183dc56b50c8bbf78d466e/93230616636.pdfIn PDF document text
    • http://emons-verlag.net/testarea/cwsCMSlight/media/files/33181216518.pdfIn PDF document text
    • http://ekstelekom.com/userfiles/file/woruzimejezugijex.pdfIn PDF document text
    • http://khodahoanglang.com/admin/webroot/upload/image/files/65599035452.pdfIn PDF document text
    • https://aftaplan.com/works/peepsparty/html/upload_files/file/gubokewigunoxigekejud.pdfIn PDF document text
    • https://www.area-tlc.com/public/ckfinder/userfiles/files/58273509647.pdfIn PDF document text
    • http://dambi.pl/userfiles/file/3390662888.pdfIn PDF document text
    • http://dienlanhlongan.com/upload/files/kimazaluvo.pdfIn PDF document text
    • http://ventmetal.ru/userfiles/files/totewalita.pdfIn PDF document text
    • https://celebicatering.com/upload/ckfinder/files/31697515804.pdfIn PDF document text
    • http://nemeckystrakac.sk/editor_uploads/files/15717943034.pdfIn PDF document text
    • http://www.vitrierbxl.be/wp-content/plugins/formcraft/file-upload/server/content/files/16092096209c41---kuwurelu.pdfIn PDF document text
    • http://chono.mn/uploads/userfiles/files/zozozasabajonozanewifewo.pdfIn PDF document text
    • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160961f4c592d0---99089223896.pdfIn PDF document text
    • http://foto-video.ch/userfiles/files/42088344209.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a606f66aff6---2801214856.pdfIn PDF document text
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16092830cc29c0---gulaw.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=fraktur+klavikula+pdfPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000103c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103C9 10204 bytes
SHA-256: 89a6e920f690cc43ae0ff2750a77db792cc3fe5c4a2e3541d8f1faee6b7469fe
font_01_sfnt_off00011ab8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AB8 22128 bytes
SHA-256: cb79138b09c542a589cceba2557a3e026df3d499c2fc9114bbca2acb6653e1ed
font_02_sfnt_off000152b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x152B0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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