Malicious PDF — malware analysis report

Static analysis result for SHA-256 868ba277565ed455…

MALICIOUS

PDF

82.6 KB Created: 2021-09-08 05:32:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 3bf7e8ab804121d76264d6d93a68a616 SHA-1: c82280929096f1b0228046b649305121ae7029a8 SHA-256: 868ba277565ed4558a51f4cfa0a14efeb4bf3f8b0a78b63256b9d883dfc000d8
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection. It contains numerous external links, many pointing to compromised CMS upload storage or disposable hosting, suggesting a link farm or phishing lure. The presence of embedded URLs and the nature of the heuristics indicate the document's primary purpose is to redirect users to malicious external sites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://pixomot.ru/uplcv?utm_term=language+learning+games+pdf PDF link annotation
    • https://safrano.pl/userfiles/file/zokuweliwadomiwes.pdfIn PDF document text
    • https://a2designbg.com/userfiles/file/dipesubazosidajun.pdfIn PDF document text
    • https://afmiletisim.com/resimler/files/56579541467.pdfIn PDF document text
    • http://r2doodles.com/clients/4/4a/4a4ed909dcef54c1e3ec6a0ce1d29f2d/File/movubefuzepimaveluzat.pdfIn PDF document text
    • http://bensonlandscape.com/editorData/file/83768408361.pdfIn PDF document text
    • http://hasici-pristroje-eshop.cz/files/file/11077310656.pdfIn PDF document text
    • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/16070f96981cfe---vaxiw.pdfIn PDF document text
    • https://aftaplan.com/works/peepsparty/html/upload_files/file/saduxofiselewonukufolapu.pdfIn PDF document text
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16072b8d26c729---53679226410.pdfIn PDF document text
    • https://alternativecarrepair.com/userfiles/file/kuxibonasiperagisuxomijis.pdfIn PDF document text
    • http://hzzxtl.com/UploadFile/file/20210624073412074.pdfIn PDF document text
    • http://studioprogettoarchitettura.eu/userfiles/files/migasiwojewuma.pdfIn PDF document text
    • https://kopari.hu/files/file/xusoridegevewudu.pdfIn PDF document text
    • http://tsg-edinstvo.ru/userfiles/file/11221350483.pdfIn PDF document text
    • http://grandp.ru/userfiles/file/taminizijegevatulo.pdfIn PDF document text
    • https://traveltokiev.com/wp-content/plugins/super-forms/uploads/php/files/lk8fpre60k037nirled0r2kgn4/mepuvunufovatesuzokafenin.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/e1olpetst7s92l5iqikj7blgfj/lavasulitukemuwup.pdfIn PDF document text
    • https://98ing.com/upload/ck/files/20210726_141403.pdfIn PDF document text
    • http://rintoyo.com/userfiles/file/gufipotujodelafemova.pdfIn PDF document text
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bad9bca48db---95630877995.pdfIn PDF document text
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/5a9f7c8b68319583b522c9a44818cc6e/22664940249.pdfIn PDF document text
    • https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/59d55f2ec68a42fd1950ed6d9d30d26a/jefofatevevodagida.pdfIn PDF document text
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160c7352bee819---50102810565.pdfIn PDF document text
    • http://geofer.eu/userfiles/files/wisedaxexuxevego.pdfIn PDF document text
    • https://minutesnap.com/wp-content/plugins/super-forms/uploads/php/files/4b9cfaf6d21022fea3d3d743eb8b6d6a/xavemagopetuxi.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

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_off0000df60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF60 10680 bytes
SHA-256: 32f8a2ccb776b788bc63594618e16f5e2618c565bbe80326e721486f7c5d467f
font_01_sfnt_off0000f78e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF78E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010fa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FA0 17480 bytes
SHA-256: 36a9f2421c1e15b5e94309dee5e2ef866dd470b599065ee54337e3c45ae6ec5c

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