Malicious PDF — malware analysis report

Static analysis result for SHA-256 a625c8ff6a7d6116…

MALICIOUS

PDF

93.0 KB Created: 2021-09-05 08:19:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 0f3bfaff07c81f205e963888529f335d SHA-1: e8eaaca5b6777b98664360101b03ad6655a4912a SHA-256: a625c8ff6a7d61163ce023b3f526ed5a06bcc84c6d24aa32e64e5cbcf70cc8d2
156 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to compromised WordPress sites and disposable domains, a common tactic for phishing or distributing malware. ClamAV detection as 'Pdf.Phishing.Trojan' and ML classification strongly indicate malicious intent. The file likely serves as a lure to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9820

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://medvor.ru/uplcv?utm_term=paris+street+style+coloring+book+pdf PDF link annotation
    • http://baigeleather.com/userfiles/file/zeparu.pdfIn PDF document text
    • https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4083d7b875---73965450770.pdfIn PDF document text
    • http://fandimnarodaku.cz/upload/file/pupinav.pdfIn PDF document text
    • http://adance0112.com/upfile/editor/file/gofasoxo.pdfIn PDF document text
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/9ef8f7189e42c06f517ef46fff159799/rapufolemos.pdfIn PDF document text
    • https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/2aeecca8018efb181b8c5689d24e1bb2/96692211800.pdfIn PDF document text
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086011f11d16---tusegaviziwosalamup.pdfIn PDF document text
    • https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160739c57a186d---45081059105.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e20845e81d---jasisafomubuj.pdfIn PDF document text
    • https://habibitours.com/ckfinder/userfiles/files/vowojavawadidijo.pdfIn PDF document text
    • http://thementalhealthadvocates.org/files/userfiles/file/72487899828.pdfIn PDF document text
    • http://nowyhotelik.pl/userfiles/file/livarudexogewota.pdfIn PDF document text
    • http://elmbbq.com/uploads/files/xiramopivadoj.pdfIn PDF document text
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/1d2d15fac08693057f31834a2fed3fc2/97637994586.pdfIn PDF document text
    • http://www.kilincsweb.hu/fileok/file/2715330081.pdfIn PDF document text
    • https://vleek.com/uploads/files/vuletexexipunudes.pdfIn PDF document text
    • https://esprimagroup.com/userfiles/file/jinikujumegagejo.pdfIn PDF document text
    • http://pantryscan.com/123cars/imagefck/file/bizenomubidugubanixapuw.pdfIn PDF document text
    • http://goldway.jp/upload/board/file/34881114596.pdfIn PDF document text
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160836a2f65fd2---61175471356.pdfIn PDF document text
    • http://thepnguyentran.vn/media/ftp/file/woluxizopasapusoginuv.pdfIn PDF document text
    • http://freewest.at/50656600064.pdfIn PDF document text
    • http://asahiru-ban.com/files/files/tujolibelukenoxawi.pdfIn PDF document text
    • http://www.hgbehringer.de/img/files/files/25629976884.pdfIn PDF document text
    • http://www.bordadoindustrial.com/ckfinder/userfiles/files/94150112659.pdfIn PDF document text
    • http://membranekeyboard.pl/_data/file/zebewanoxoruvexaxexizup.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000103c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103C3 18420 bytes
SHA-256: 004459b8dad25e9ce0ca93e33d67eb9509293a43e3455065634808b15566c8b4
font_01_sfnt_off00013461.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13461 11144 bytes
SHA-256: 85131da67544876bd65295d39cd7ea8aec8177ec8d0bd00839c11562376c56ab
font_02_sfnt_off00014e29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E29 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.