Malicious PDF — malware analysis report

Static analysis result for SHA-256 0027ed6f3e780206…

MALICIOUS

PDF

70.7 KB Created: 2021-09-16 10:53:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: f508be35670eba40c657b3d837323893 SHA-1: b92ae777d183b749489bde5a596a3af6043407b5 SHA-256: 0027ed6f3e78020687ba34e4c618ac8bd699c239bb2f34899d6a2388c4a4a1d8
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised websites or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. The presence of multiple external URIs and link farms points towards a tactic of directing users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://nomylo.ru/uplcv?utm_term=managing+successful+programmes+2011+edition+pdf+free+download PDF link annotation
    • https://icicle-mountaineering.ltd.uk/ckfinder/userfiles/files/bulaz.pdfIn PDF document text
    • https://cukimentescukraszda.hu/files/files/mezade.pdfIn PDF document text
    • http://madmojo.com/fckupload/file/xuwutasubut.pdfIn PDF document text
    • https://strategieb2b.com/userfiles/file/99319676280.pdfIn PDF document text
    • http://onelove.cz/file/debotitapalu.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/51643178893.pdfIn PDF document text
    • https://haysalon.com/public_html/userfiles/file/fositodefa.pdfIn PDF document text
    • http://tlxzkj.com/uploads/file/112056195870.pdfIn PDF document text
    • https://bonaparte.cappencms.com/templates/files/70510228763.pdfIn PDF document text
    • http://kennyre.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613703e526fe7---leziripakiro.pdfIn PDF document text
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/16130708a1bfb2---59942539713.pdfIn PDF document text
    • http://asacnfservices.com/ckfinder/userfiles/files/dovepafevugig.pdfIn PDF document text
    • http://cetinelektrik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16133b56cb29ae---wibewonajovarixinev.pdfIn PDF document text
    • http://currycornersugarland.com/admin/images/file/xabivobitazib.pdfIn PDF document text
    • http://scandinavia-ex.com/images/blog/file/36798759417.pdfIn PDF document text
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/161388647b490f---ladokewakumufokipupeko.pdfIn PDF document text
    • https://my-natural-style.net/upload/files/64245259022.pdfIn PDF document text
    • http://stroytehcentr.ru/images/file/42108473313.pdfIn PDF document text
    • http://gmei.lt/ckfinder/userfiles/files/7240269433.pdfIn PDF document text
    • http://ordineveterinarivenezia.eu/userfiles/files/67574062668.pdfIn PDF document text
    • http://rc-modeller.se/images/file///fegekibixip.pdfIn PDF document text
    • https://le27.fr/docs/file/68400606395.pdfIn PDF document text
    • https://morganmethod.tuesdaytrader.com/ci/userfiles/files/wulejipififowowef.pdfIn PDF document text
    • https://aftaplan.com/works/peepsparty/html/upload_files/file/mibutazefepokutod.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_off0000b48a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB48A 14680 bytes
SHA-256: e902e230fa717a2ace2c3858df87ea3565c755f66efc1c847e258426ddb7b9c3
font_01_sfnt_off0000d933.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD933 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f14a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF14A 11436 bytes
SHA-256: 71f88333137dcc241c66c112944c6d95d5ea7c726c652d7e1ecc4ffe2fca50b3

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