Malicious PDF — malware analysis report

Static analysis result for SHA-256 485289c323b9b580…

MALICIOUS

PDF

79.6 KB Created: 2021-08-17 05:37:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-17
MD5: bfc22b8289c5be8174965bb75db57b46 SHA-1: f61d6a36de591036c07533e4e747c9cb3f3ee913 SHA-256: 485289c323b9b580442cc37f82dc193347497f553e2027482e10878fb9d6b35c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to a variety of domains, many of which appear to be compromised or disposable hosting. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with a malicious document designed to lure users to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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://smidgel.ru/uplcv?utm_term=10.s%C4%B1n%C4%B1f+matematik+testleri+pdf+indir PDF link annotation
    • http://domosplast.hu/files/file/90804961457.pdfIn PDF document text
    • http://qhchemicalsfeed.com/upload/files/31584111608.pdfIn PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/1f2f777186ccc237ec0c005ceaafa7a3/10409155473.pdfIn PDF document text
    • https://sgdivorcelawyers.com/wp-content/plugins/super-forms/uploads/php/files/ae87ce85994f34d60517161dff7fb8fc/gaxasobomelivudasotet.pdfIn PDF document text
    • https://corghialberti.it/file/77892546581.pdfIn PDF document text
    • http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160e4c51ee7694---wepexiserabozetitig.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/070796d6416265919a40bb8d08996812/6910446765.pdfIn PDF document text
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/clvp5dtgka03tu2kpm7eum6t51/98688094431.pdfIn PDF document text
    • http://stacjaregeneracja.pl/userfiles/file/parebowofefule.pdfIn PDF document text
    • http://hk-sai.com/ckfinder/userfiles/files/dotevolotesisoxejupopoxuk.pdfIn PDF document text
    • https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/5ab86bf60eee6d6c63ac0531eca0258a/42634400190.pdfIn PDF document text
    • https://bandotrading.it/uploads/file/volukimolozazogaleti.pdfIn PDF document text
    • http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/1608e3a895c094---lutafebafutuvum.pdfIn PDF document text
    • https://pfollowers.com/ci/userfiles/files/duduzuvexaboxoxito.pdfIn PDF document text
    • http://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/54198e582094f5c54140417d9ec941ca/zilexopi.pdfIn PDF document text
    • https://nestaerospace.com/uploads/file/52788161793.pdfIn PDF document text
    • http://artin-intranet.com/ckupload/files/bolukulurozasizo.pdfIn PDF document text
    • http://cleanyachts.it/writable/public/userfiles/file/rirakevupewisobanuwini.pdfIn PDF document text
    • http://gibisch.info/files/files/69164241294.pdfIn PDF document text
    • https://susta.vn/userfiles/file/bugajulewomavobone.pdfIn PDF document text
    • http://webursitet.org/Files/file/fikitawerapusisozuxeka.pdfIn PDF document text
    • http://studiovalecchi.it/userfiles/files/zinemolekanujegotididi.pdfIn PDF document text
    • https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096e18b58241---bomugewamura.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0E8 10820 bytes
SHA-256: 2bf2019bb6b8003a58bb7d52eabe7da252de6b5fb7b08242d216075a22c5c493
font_01_sfnt_off0000e9bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9BF 18124 bytes
SHA-256: a8220218632eb4dfa37b39586c3a2aba08ba25d9fd6b20beadb338b9700510e6
font_02_sfnt_off000115b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115B2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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