Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed0f49c03c519343…

MALICIOUS

PDF

77.5 KB Created: 2021-06-09 17:16:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2541463426dcb23b8e1ff9c85f7cdef4 SHA-1: 7b9e3c1c1f305951ae4c0554785325e9ee37a8df SHA-256: ed0f49c03c519343049c0e150a2db1a81d50cf711ac7b59ff90e9f61bf4069aa
156 Risk Score

Malware Insights

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

This PDF document is classified as malicious, exhibiting characteristics of a phishing lure. It contains numerous links pointing to compromised websites and disposable hosting, disguised as a download for audio files. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to sites hosting further malware or phishing content.

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=jignesh+dada+audio+mp3+download PDF link annotation
    • https://bonacorsi.it/file/58213466767.pdfIn PDF document text
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/160907b2fb6876---gosasuto.pdfIn PDF document text
    • https://www.m2asolutions.com/wp-content/plugins/super-forms/uploads/php/files/e21bab4be675fd6c673ac1b95473dd9c/vezenosojemivabotuwimesu.pdfIn PDF document text
    • https://www.acetechnology.co.in/wp-content/plugins/super-forms/uploads/php/files/bv8llle7d1a3qrp4935v11bf0d/8289506803.pdfIn PDF document text
    • http://www.britocunhaadvocacia.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/16098aef4ee155---vupin.pdfIn PDF document text
    • https://ajwatravel.com/wheelmarine/userfiles/file/waxosabivuma.pdfIn PDF document text
    • http://sugarfree-gelato.com/upload/file/94291132672.pdfIn PDF document text
    • https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/6f17f213c040be15e16075b53033d958/71292496128.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/qkmj3k0aomt6gi8o81b58c4m74/33041920447.pdfIn PDF document text
    • http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1609bba6053db6---58771797921.pdfIn PDF document text
    • http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1a212762ac---76410339807.pdfIn PDF document text
    • https://amerismithenterprises.com/wp-content/plugins/super-forms/uploads/php/files/2cb4fe11aeabad2baeac1701f3321eb4/nodanigusenejujixuwuzo.pdfIn PDF document text
    • http://ozari-ua.com/files/file/movawonu.pdfIn PDF document text
    • https://zlatartopalovic.rs//files/1238342419.pdfIn PDF document text
    • http://emannsltd.com/userfiles/bisugiwibuposala.pdfIn PDF document text
    • https://www.certificagreen.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079d40daded9---23969068898.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_off0000f08f.bin
e68e1c35c74257fc8dfb427708dfeb7e14bb40f1e7e8d65c333678f9fab2e4aa
pdf-font-stream PDF embedded font (sfnt) at offset 0xF08F 5524 bytes
font_01_sfnt_off00010345.bin
e43d16fd0cc217c0664e82dbc2cf5afddab91a0be2ae40c5a240d45f5df1ebd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x10345 11252 bytes