Malicious PDF — malware analysis report

Static analysis result for SHA-256 82eb9c947480ae2e…

MALICIOUS

PDF

81.2 KB Created: 2021-07-13 11:13:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 0f56292a132e87978ac50114bc40eeee SHA-1: b0b1cf64363114c83d0228a932c973450619ab11 SHA-256: 82eb9c947480ae2ecf2e1b20a5b4a510275ae0d1964796699c96fdd6c871f5b6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to external websites, many of which are hosted on compromised CMS uploads, indicating a link farm designed to redirect users to potentially malicious content. The presence of embedded URLs and the nature of the heuristics suggest an attempt to exploit users through deceptive links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://rebates.forex/wp-content/plugins/super-forms/uploads/php/files/59f5ounh3mqk8sn7ffndkp7347/gilikep.pdf In PDF document text
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/c180db740fdee1a01eced059d35c48f3/vevavidokevadiso.pdfIn PDF document text
    • https://www.mysmilestudios.com/wp-content/plugins/super-forms/uploads/php/files/1dbf89f73678d418bb8b70472188a5d2/69868107851.pdfIn PDF document text
    • https://dcmheavyequipment.com/admin/images/file/furamadilibasemaxarereme.pdfIn PDF document text
    • http://vector-mebel.ru/uploads/files/10761280439.pdfIn PDF document text
    • http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/e986fc10c6e51432c64aebd404f2f959/8918423826.pdfIn PDF document text
    • https://dipinkrishna.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4484d16022---88250789031.pdfIn PDF document text
    • https://www.kiakaha.gr/wp-content/plugins/super-forms/uploads/php/files/2g5s11jkckomda8ot01i25oep1/gejexoru.pdfIn PDF document text
    • https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/e94b7fcae51ee4acc6fca4b9701cf8e8/89119840088.pdfIn PDF document text
    • http://zrdb-drogbud.pl/Upload/file/famoxonepififumiwulosi.pdfIn PDF document text
    • http://lamelove-zakryti.cz/userfiles/file/6905501520.pdfIn PDF document text
    • https://lawpropertyconsultants.co.uk/wp-content/plugins/super-forms/uploads/php/files/5di2g7qjgeejn1ti3m9shgklra/wudonuvikerelikefa.pdfIn PDF document text
    • https://jasz-pap.hu/UserFiles/file/85772544324.pdfIn PDF document text
    • https://georgiamusicpartners.org/wp-content/plugins/super-forms/uploads/php/files/41a63b3c794daccbdbc5e06ebd1bfe17/zexipewavololufexoni.pdfIn PDF document text
    • http://flgr.ru/files/files/naduxuzukijetatizuginum.pdfIn PDF document text
    • https://marljivo.hr/UserFiles/files/56635177655.pdfIn PDF document text
    • https://my-natural-style.net/upload/files/tonabeluwadir.pdfIn PDF document text
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb3d4b50750---sajawisa.pdfIn PDF document text
    • http://kuehllawpc.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/wemisafipafujogibepuk.pdfIn PDF document text
    • http://legalinet.eu/userfiles/files/41546897718.pdfIn PDF document text
    • http://www.sec-ollivier-associes.fr/www/upload/file/gopobegasuvopufev.pdfIn PDF document text
    • https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/np57ufc22cbvmbm6ft5ibe3r88/70814352278.pdfIn PDF document text
    • http://parkwaywest1974.com/clients/861606/File/dugimibejozagide.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=stan+getz+the+girl+from+ipanemaPDF 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_off0000d735.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD735 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ef47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF47 18428 bytes
SHA-256: 0149eefd1b136dcb6448f4d2971c84f74c1f4021b95aef27d2a5890d6aca3f9d
font_02_sfnt_off00011d88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D88 10772 bytes
SHA-256: b868323fb9d2cab31fe2c5a22379998e9bcea3b2598837693dc651e42df6d7e7

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