Malicious PDF — malware analysis report

Static analysis result for SHA-256 faefdb3c4d2f5e89…

MALICIOUS

PDF

87.9 KB Created: 2021-08-06 16:28:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 109c5a891e220e2a835e94337e367058 SHA-1: e7a8f039ba71fc3e20ab8b16a7d45bd36ddbe325 SHA-256: faefdb3c4d2f5e89d711031f2d91afac1d08437ece16d4d8c869371859dccfa3
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection. It contains a link farm pointing to compromised CMS upload storage and disposable hosting, suggesting an attempt to redirect users to malicious content. The presence of external URIs and the nature of the link farm indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

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://le-lemniscus-incandescent.fr/ckeditor/upload/files/80489271350.pdf In PDF document text
    • https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/590995d08e1f173af2c73ced5bad5082/mimepiriteguzejujepokep.pdfIn PDF document text
    • https://bookatowncar.com/userfiles/file/nozibuxibu.pdfIn PDF document text
    • http://curry-box-deluxe.de/userfiles/file/84326914484.pdfIn PDF document text
    • https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c51fd676f3d---finupaxofibozidum.pdfIn PDF document text
    • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160754d6aa59b3---megogalisugutebugu.pdfIn PDF document text
    • https://aihr-iadh.org/uploads/FCK_files/file/28117484864.pdfIn PDF document text
    • http://langfordfinancialservices.com/userfiles/files/natoxunomaketoxinexik.pdfIn PDF document text
    • http://hanifeugur.com/image/files/84546302720.pdfIn PDF document text
    • http://jirehenl.com/userfiles/file/292229124027.pdfIn PDF document text
    • http://curry-box-deluxe.de/userfiles/file/zujiw.pdfIn PDF document text
    • https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/83599b41cf2c673a6d3ff894741b0310/giwoguxesepalikexutuwubiw.pdfIn PDF document text
    • https://wotfiles.com/ckfinder/userfiles/files/90283483534.pdfIn PDF document text
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/16073682299eba---56780731383.pdfIn PDF document text
    • http://allprintusa.com/admin/images/file/55799780159.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/611ac51d420f4e9b16e7c310a4058938/vodatesizogelogekivez.pdfIn PDF document text
    • http://kag.fr/userfiles/file/wutamijap.pdfIn PDF document text
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073e1194e8fa---87450275031.pdfIn PDF document text
    • http://grapes4u.ca/sites/all/sites/grapes4u.ca/files/netamazutisalisum.pdfIn PDF document text
    • https://kisikana.hr/userfiles/file/24633038858.pdfIn PDF document text
    • http://www.uppld.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608768903d9d6---7294244118.pdfIn PDF document text
    • http://vodnik48.ru/content/file/fexiru.pdfIn PDF document text
    • https://spherule.org/wp-content/plugins/super-forms/uploads/php/files/hvs5v825lpnradn7293u3nn237/felanike.pdfIn PDF document text
    • https://ceccarbotosani.ro/userfiles/file/xizixiwar.pdfIn PDF document text
    • https://expresstestingatl.com/wp-content/plugins/super-forms/uploads/php/files/e147b9c8e2d1e0a45a7de0c4720af8c3/57309984962.pdfIn PDF document text
    • http://studiomuraca.eu/userfiles/files/soguxiwapewe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=interpreta%C3%A7%C3%A3o+de+texto+genero+reportagem+com+gabarito+7o+anoPDF 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_off0000ed2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED2D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010544.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10544 11352 bytes
SHA-256: 7bfc9e30be3f81087d5f3b584aaf2246dd05bdf9bd7ef52b51d41ed0b05c4247
font_02_sfnt_off00011ee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EE2 19216 bytes
SHA-256: 637ca20a301d57b251dd23f52b98412c9c13d197996a05938b084b407e7ce2ac

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