Malicious PDF — malware analysis report

Static analysis result for SHA-256 254736cc96ed0b17…

MALICIOUS

PDF

84.1 KB Created: 2021-09-01 21:11:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 28ffa8b662f425f6f9364b3d94ac3cf0 SHA-1: 2868c61dd59e6a416a13ae3a13c16ef5a6578d5f SHA-256: 254736cc96ed0b174d8fa360901d4298ed2c9dac01c324e0256e55488f172cab
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many of which point to compromised CMS uploads or disposable hosting, indicating a link farm designed to redirect users to malicious sites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://guruamardaspublicschool.com/userfiles/files/bajuwesivabifirar.pdf In PDF document text
    • https://pomacanthe-art.fr/imagebeforeafter/files/rekuganomisel.pdfIn PDF document text
    • https://empylean.com/wp-content/plugins/super-forms/uploads/php/files/2d8due0cgcrd5r285r89sfnj8i/83064073494.pdfIn PDF document text
    • http://dabbleanddesign.com/clients/c/c6/c60e280709801842a26e47e23f21f170/File/14092222925.pdfIn PDF document text
    • http://eiak.org/upload/editor/files/24871325390.pdfIn PDF document text
    • http://espressobuilders.com/app/webroot/files/userfiles/files/mazanenutiwa.pdfIn PDF document text
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/96cfc88e4c3a8ade6a162e429c21f353/bobofabezekezozapo.pdfIn PDF document text
    • http://rotarycochinharbour.org/ci/userfiles/files/sufakut.pdfIn PDF document text
    • https://bluetact.com/locktactyuma/userfiles/file/xizusutaxajuzazekuf.pdfIn PDF document text
    • http://gramercygrand.ru/files/file/xetimudavowupasinekatikoz.pdfIn PDF document text
    • https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/161094fdc20c3a---wolarip.pdfIn PDF document text
    • http://acmemask.com/upfiles/editor/files/18505015112.pdfIn PDF document text
    • https://pima-alarms.rs/slicice/file/33663221520.pdfIn PDF document text
    • http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/160961778185fb---90068481670.pdfIn PDF document text
    • https://sf-tfi-pgu.uz/wp-content/plugins/super-forms/uploads/php/files/b6a84467d2e1954243cb65a7158b96b3/82754762705.pdfIn PDF document text
    • https://agencement-menuiserie-var.fr/stockages/files/vumomakiwaxorupamanunuge.pdfIn PDF document text
    • https://xn--80aaa1anac6cg.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/e8cdb70681fd2d717c2c2f7bd8df17b6/33498559535.pdfIn PDF document text
    • https://yar-net.ru/userfiles/file/jeroragoxona.pdfIn PDF document text
    • https://law.com.sg/wp-content/plugins/super-forms/uploads/php/files/81c8f050b34c7db3bc2c208eea9b4dfc/zeginebaberenajuzeka.pdfIn PDF document text
    • https://tirthmobile.com/wp-content/plugins/super-forms/uploads/php/files/9kfb8u2o7qscqng1fr9fqo1pud/49246752788.pdfIn PDF document text
    • https://binarbaidfabrication.com/public_html/userfiles/file/37508749475.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=sarkar+3+full+movie+download+hd+720p+free+downloadPDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0FE 17544 bytes
SHA-256: ee870b0abb113b4eb444196062f884a5439c636b72fb80b839592901b94b5a69
font_01_sfnt_off00010e7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E7D 11380 bytes
SHA-256: 1ae3a83e6f44c7813e03da92e8395bb62661281fcad109aceaeca8bddda2e5d7
font_02_sfnt_off0001293f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1293F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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