Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e5669b67124d909…

MALICIOUS

PDF

222.6 KB Created: 2021-08-05 16:49:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: 71e9b9005ba4b05d990bb2fbae16aa4b SHA-1: f56468e3ad4549ca42b6b9b62d8a6c632cd44c56 SHA-256: 6e5669b67124d909fa4474d61ad4523f98b698b0f422e1d7e9f0c44149ad7d22
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links pointing to compromised websites, suggesting a phishing or redirection attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing lure designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

Heuristics 5

  • 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.
  • 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://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d434a4ed48---89599137666.pdf In PDF document text
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d1899db3134---46795946795.pdfIn PDF document text
    • https://securityguardsupply.com/php/uploads/file/18489379169.pdfIn PDF document text
    • https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f4efcd03eb---telunorilebanubile.pdfIn PDF document text
    • https://vishalahospitality.com/ckfinder/userfiles/files/52611879269.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092839dd24df---bikizunarikuki.pdfIn PDF document text
    • https://hotel-la-licorne.fr/userfiles/file/25077724890.pdfIn PDF document text
    • http://dom-nenilovo.ru/wp-content/plugins/super-forms/uploads/php/files/71c12e279e565ea73dce4215806155cc/84150105924.pdfIn PDF document text
    • https://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/d534s1te2d3redsk8m4pb57n62/jawed.pdfIn PDF document text
    • https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160aaf77b01a15---vebilivozis.pdfIn PDF document text
    • http://lagrupacio.cat/file/80069344814.pdfIn PDF document text
    • http://koppeika.ru/userfiles/file/xowumugazenelizotolexoz.pdfIn PDF document text
    • http://puzynowska-kancelaria.com/userfiles/file/jetegamiwuvexilumesofeb.pdfIn PDF document text
    • http://holidayinntorino.com/userfiles/files/44950862897.pdfIn PDF document text
    • https://honkakuji.jp/honkakuji/images/ckfinder/files/15975953601.pdfIn PDF document text
    • http://worthingtonpark101.com/userimages/xiwojuvufazonaj.pdfIn PDF document text
    • https://toyotaautobody.com/ckfinder/userfiles/files/9120296778.pdfIn PDF document text
    • http://travelci.ru/ckfinder/userfiles/files/18087203940.pdfIn PDF document text
    • http://maslag.eu/userfiles/file/55048783487.pdfIn PDF document text
    • http://polipack.ru/content/file/26581628292.pdfIn PDF document text
    • https://goez3.com/10005001208290177/ckfinder/userfiles/files/waroginosuxuxobuf.pdfIn PDF document text
    • http://digimaap.com/wp-content/plugins/super-forms/uploads/php/files/vvb1mtrheo02kkb2651otkobmo/majaki.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=manual+de+carpinter%C3%ADa+en+aluminio+pdf+gratisPDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00030659.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30659 19232 bytes
SHA-256: 254cce38cd450532d8a92bdf3aba11ed3927d97efa74bb4c72a1b5e76fad4e79
font_01_sfnt_off000337bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x337BB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00034fd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34FD2 11120 bytes
SHA-256: a8ca4878dec67abd46b2a6055ea483f206e6737d1fe0c7a65f98ad17d5a20a91