Malicious PDF — malware analysis report

Static analysis result for SHA-256 2869d14dee1f26e8…

MALICIOUS

PDF

94.8 KB Created: 2021-09-01 16:21:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 66a346ca850b7ef84fbd5433c2d0daf9 SHA-1: 3bec353f130288795f11a46899488e253f5519eb SHA-256: 2869d14dee1f26e839ea68e775e8fb7e7b497ad449be6a0f3b215fdb6aeea5c6
156 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links pointing to compromised WordPress sites, suggesting an attempt to redirect users to malicious content. The presence of multiple distinct hosts and a link farm pattern indicates a coordinated effort to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160cd336f95be4---datadusirixopiligaxovabe.pdf In PDF document text
    • https://bbensonmft.com/wp-content/plugins/super-forms/uploads/php/files/52fb64e0c0a28d1c6c5c323fab8a743f/94554341832.pdfIn PDF document text
    • https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/b5e7691c0a9237ec3e8ec08187817a6b/62549076333.pdfIn PDF document text
    • http://goshaggers.com/clients/2/2c/2ce39afd4341152949bc146f79210d6f/File/linilije.pdfIn PDF document text
    • http://fsanaq.com/upload/file/210715184726235192lgalmnl0ma1f.pdfIn PDF document text
    • http://www.xpresswedding.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ad25895bfb---zalisiziwigetajitevofezaj.pdfIn PDF document text
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d1f49aeff4---betop.pdfIn PDF document text
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/160881d3294629---72869131284.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a14d0bd1b40---tepofusabazoxa.pdfIn PDF document text
    • https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/sodhvcpgrbjd5kmpart7hisn9i/kijixejapibemoruraladi.pdfIn PDF document text
    • http://daglichtfilters.nl/ckfinder/userfiles/files/56552177263.pdfIn PDF document text
    • http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/ipdudo0ondh4k1oaknq2bubr26/solexalewuwiwipogavu.pdfIn PDF document text
    • http://bukvoznaika.ru/ckfinder/userfiles/files/foxupemonosujipiwuw.pdfIn PDF document text
    • https://paardenwelzijnscheck.nl/app/webroot/files/ckeditor_files/files/rizopokupupugiduvefoza.pdfIn PDF document text
    • http://childhood-matters.com/clients/49507/File/1178899.pdfIn PDF document text
    • http://www.sport-konyv.hu/userfiles/file/99595374042.pdfIn PDF document text
    • https://gfow.om/wp-content/plugins/super-forms/uploads/php/files/3jsqi9qb8s8v060n0405rq4pfr/nowumixavomuxokod.pdfIn PDF document text
    • http://rowerowaszkola.pl/imgturysta/files/67112411781.pdfIn PDF document text
    • http://sage-chem.com/image/files/20210607_192939.pdfIn PDF document text
    • https://legacydockandmarine.com/wp-content/plugins/super-forms/uploads/php/files/25f827f27b4291ed096f428e2083dd4b/61245472758.pdfIn PDF document text
    • https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/3h86m10g5arl3msgmpr6kk6jrl/miwugurenekajuxilajuki.pdfIn PDF document text
    • http://cnex.cc/images/blog//file/46688913292.pdfIn PDF document text
    • http://novelinternationalschool.com/ckfinder/userfiles/files/4423135909.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=venn+diagram+of+plant+cell+and+animal+cellPDF 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_off00010676.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10676 20300 bytes
SHA-256: 5915995250812461cf2ab6776b81b969cea61a2645a72d2a8487a959308d56ab
font_01_sfnt_off00013c5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C5C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00015473.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15473 10764 bytes
SHA-256: fc06c9d408a3be12fcb0ba4f10a621b5d563a821a680060b025799111173ec16

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