Malicious PDF — malware analysis report

Static analysis result for SHA-256 95e8eba83b11024f…

MALICIOUS

PDF

75.9 KB Created: 2021-06-14 07:16:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: b03a8779ba626819cfc847814e18b622 SHA-1: 042c5a59c8f516ea2da3bcbc83f4f2a9803e340d SHA-256: 95e8eba83b11024f724d2892f4246afbcd1628098b9b2585e36e57e96baa245b
156 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of a phishing lure, specifically attempting to trick users into downloading 'ldplayer 4.0' via links hosted on compromised WordPress sites and disposable domains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to distributing unwanted software or further malware. No scripts were extracted, but the embedded URLs and heuristic firings point to a phishing and potential malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://archism.ru/uplcv?utm_term=ldplayer+4.0+free+download PDF link annotation
    • https://balajitutorial.com/admin/userfiles/file/riduwixubepobatunaxofemu.pdfIn PDF document text
    • https://www.parkgest.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160b9de2c8124b---21541028978.pdfIn PDF document text
    • http://terezmisszio.eu/files/file/lukopufatixobonu.pdfIn PDF document text
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16082e9ae1d287---41527331000.pdfIn PDF document text
    • http://inarchengineering.it/userfiles/files/perijikegokeminepefob.pdfIn PDF document text
    • https://sandalyecenneti.com/wp-content/plugins/super-forms/uploads/php/files/9s99fs4mk68cgg8muki0sj6poa/parufibetodug.pdfIn PDF document text
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160784dbde87f0---61177609412.pdfIn PDF document text
    • http://flatadministration.com/uploades/fckeditorfile/45463648.pdfIn PDF document text
    • https://thehamptonsbloomington.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087d54ca0c01---80318855279.pdfIn PDF document text
    • https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf98ba3b2d5---6063512219.pdfIn PDF document text
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/16099cd1ff1489---kotuboparupunekax.pdfIn PDF document text
    • https://alakharia.com/public_html/userfiles/file/bexenof.pdfIn PDF document text
    • http://hk-dcc.com/wp-content/plugins/super-forms/uploads/php/files/58m1jpda0fb711dmakolbgbmbj/61524502116.pdfIn PDF document text
    • https://cristalensi.com/public/File/kofifuwesupuwolefidijiv.pdfIn PDF document text
    • https://arizonalightingsales.com/wp-content/plugins/super-forms/uploads/php/files/3d73b253033878d6f9aaca783a86d561/zudumowezadidesare.pdfIn PDF document text
    • https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/65e5548180ef0feeb1176d99c2d7307c/9990528313.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eaa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAA4 5252 bytes
SHA-256: a020411edf20819bb0cc3ea1038387d4ba8d3e4966402a4a025a55191b5da299
font_01_sfnt_off0000fcb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCB7 11512 bytes
SHA-256: 880bca4621921e0fe0a650bed10316555928c8e1442015d4dee37862f8bcab01