Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ef210f9947430f7…

MALICIOUS

PDF

94.4 KB Created: 2021-07-02 23:59:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 4c7048eafc31866ab47ce89bca4d36b6 SHA-1: f9e9d2f28216b5c26103370880d726ebefa67ca1 SHA-256: 6ef210f9947430f729b63f19807672342aa76679059f86ff7916720bc8732e28
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The document functions as a link farm, containing numerous embedded URLs that point to external sites, many of which are hosted on compromised CMS uploads or disposable domains. These links are likely intended to lead users to phishing pages or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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 http://studiotecnicomartani.eu/userfiles/files/wopizajadet.pdf In PDF document text
    • https://autosaloncenter.com/uploads/file/sugozupojiw.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/m9ndcophrp98mkt3p78jv0irp3/4713580294.pdfIn PDF document text
    • http://nuyewpilot.academy/wp-content/plugins/super-forms/uploads/php/files/c72d8ed1d41d969649ee919a5495fff4/vepal.pdfIn PDF document text
    • http://berbun.com/user_img/file/89968710897.pdfIn PDF document text
    • http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608b090f86c0b---nabupoxekik.pdfIn PDF document text
    • https://www.nestroots.com/wp-content/plugins/super-forms/uploads/php/files/eu9kulcoqk3sb983e5ga6sr2c2/ruveb.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/b0aq0dnm1keous2nhaqgettu7s/belakopeluwev.pdfIn PDF document text
    • https://hazeloyun.com/calisma2/files/uploads/xuxevij.pdfIn PDF document text
    • https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bce15a16858---tikoviwefezetesedukuw.pdfIn PDF document text
    • http://www.misshandicap.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16077fd04ee115---lidetakawosifa.pdfIn PDF document text
    • https://sedefartphotography.com/resimler/files/72844395583.pdfIn PDF document text
    • http://stpatricksreunion.com/clients/84553/File/65365189111.pdfIn PDF document text
    • https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/81cqnp331ir6g2e6d8cps7aqi3/xametenos.pdfIn PDF document text
    • https://earplighting.com/wp-content/plugins/super-forms/uploads/php/files/22e473750cd865cd9a33a94866527315/marova.pdfIn PDF document text
    • http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/160c6e2def0741---54632730504.pdfIn PDF document text
    • http://bensonlandscape.com/editorData/file/19075208290.pdfIn PDF document text
    • https://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/bf52d5ad333d0a52e9076569dc300363/43266667816.pdfIn PDF document text
    • https://completecollegestrategies.com/wp-content/plugins/super-forms/uploads/php/files/052a2d79cb49f01837b554e2f9ac1cef/lexinadodovut.pdfIn PDF document text
    • https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/70c33f2cbe3da2e181490574210eacba/vukuzikiletiseluwakikive.pdfIn PDF document text
    • https://completecollegestrategies.com/wp-content/plugins/super-forms/uploads/php/files/42a37404b5b64271b61c6111c29dd233/59312238660.pdfIn PDF document text
    • http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082c86676881---66955792889.pdfIn PDF document text
    • https://contabil-fiscal.ro/mm/file/fijegokudopovorusor.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=smaller+macaw+for+salePDF 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_off000111ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111EA 10364 bytes
SHA-256: 3fc3a7a087e10f223abeb9495524adaf597f96e0dcd395dbba987442e9ec7871
font_01_sfnt_off00012965.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12965 16640 bytes
SHA-256: 58e5485d5f16df87c93c9922bd1ed702d5c0851ecb82e15c1b3c49a70c6c636d
font_02_sfnt_off000154b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x154B1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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