Malicious PDF — malware analysis report

Static analysis result for SHA-256 07208d2ad89a67c4…

MALICIOUS

PDF

73.2 KB Created: 2021-09-02 19:29:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 7189cde0f870949d9fbe1769a78eda5d SHA-1: 24fc5a5be22b9d38477919d287e9496c3b901014 SHA-256: 07208d2ad89a67c478cde6d7cb92d3a66d38b3939254dc4c384d936b0a0ff02a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, many hosted on compromised WordPress sites, suggesting a link farm designed to redirect users. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 6

  • 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.
  • 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://inwebjor.ru/uplcv?utm_term=composicion+quimica+de+la+leche+pdf PDF link annotation
    • https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/82632093502b5df30ee3b860588e6719/xurojujapapifajireb.pdfIn PDF document text
    • http://vonschickenfremont.com/uploads/files/28646744675.pdfIn PDF document text
    • http://glamour-nsk.ru/ckfinder/userfiles/files/62469249568.pdfIn PDF document text
    • http://trungtinjsc.vn/upload/FCK/file/23650113522.pdfIn PDF document text
    • http://mamnonkitty.com/webroot/img/posts/files/53120140812.pdfIn PDF document text
    • https://veaodaibrahma.com/uploads/image/files/50310117891.pdfIn PDF document text
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160bfa12b7f03f---43336114638.pdfIn PDF document text
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/5e3b5606a7d4ff4de2bb40cea3ee68fa/xedupugefodixetuleja.pdfIn PDF document text
    • http://global-gypsum.com/wp-content/plugins/formcraft/file-upload/server/content/files/160875e276ebca---narewupajiv.pdfIn PDF document text
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b16c1428071---21159217703.pdfIn PDF document text
    • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/3d835eac87b0a6582f80e57d8eea8948/84592207773.pdfIn PDF document text
    • https://asaptransfers.co.uk/wp-content/plugins/super-forms/uploads/php/files/ltoog39sij6pb26k0o14u0bjq1/womako.pdfIn PDF document text
    • https://luxmarketing.agency/wp-content/plugins/super-forms/uploads/php/files/ajieaivpb9q3oib6dfe6fmsirv/228925835.pdfIn PDF document text
    • https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a073de7426f---pagugin.pdfIn PDF document text
    • http://teleinwestor.pl/userfiles/file/74978831037.pdfIn PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160883fe56304f---totovukadejafafedivebukuj.pdfIn PDF document text
    • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/9bfe16526b50cfaf737e49bafbbdf3fb/zetetudowogezuvudani.pdfIn PDF document text
    • http://reicar.dk/userfiles/file/2505907517.pdfIn PDF document text
    • http://com123.vn/uploads/file/zakiwarixilavo.pdfIn PDF document text
    • http://jeanthompson.nl/ckfinder/userfiles/files/52875124139.pdfIn PDF document text
    • http://www.maderas-navarro.com/ckfinder/userfiles/files/67526632061.pdfIn PDF document text
    • https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/ap2h6sg92k49f0m2gggvpi67m6/rarelinuno.pdfIn PDF document text
    • http://www.brickchamber.com/ckfinder/userfiles/files/kataloduluvujo.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_off0000bcf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCF9 16708 bytes
SHA-256: d64b9971c329628dbac72fb80eb852929efdbc82c41f7e7386f53ab3a80f717b
font_01_sfnt_off0000e628.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE628 10964 bytes
SHA-256: 62c0df1bf9f0a851feecbe30a82bd2b392b8ca58f90f238a8fa610361b7931d0
font_02_sfnt_off0000ff2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF2B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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