Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d1b01d293fa415b…

MALICIOUS

PDF

75.7 KB Created: 2021-09-05 06:21:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: d5d0569c74c15aed98549299b78424f6 SHA-1: 11963833d186138c9a9b81d48d0ef79bc1bd2c49 SHA-256: 3d1b01d293fa415b2ea9d26e48bb2f259d8294244150e0a739ba6dcfb7741cee
156 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to compromised WordPress sites and disposable domains, suggesting a link farm designed to redirect users to malicious content. The PDF structure and embedded links are consistent with phishing lures or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://philabc.ru/uplcv?utm_term=first+law+of+thermodynamics+example+problems+pdf PDF link annotation
    • https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/8291cde049144aaef4140da3c2b56435/27271323192.pdfIn PDF document text
    • http://archinfo.ru/uploads/file/gikifinajukotejo.pdfIn PDF document text
    • http://fritz-fahrlaender.ch/download/38915399046.pdfIn PDF document text
    • http://karat-dobremiasto.pl/userfiles/file/24009204276.pdfIn PDF document text
    • http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611135109be55---87047731762.pdfIn PDF document text
    • https://penal-garazh.ru/files/nowaw.pdfIn PDF document text
    • http://hrudolf.com/userfiles/wimux.pdfIn PDF document text
    • https://zweefvlieg.net/userfiles/file/gibafudaxugurufep.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607874c21c4bc---wonadifunagapovijiditor.pdfIn PDF document text
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160970262a1265---87519279761.pdfIn PDF document text
    • http://laclonghotel.vn/upload/files/62623891019.pdfIn PDF document text
    • https://kuzeyilac.com/resimler/files/38574578352.pdfIn PDF document text
    • http://mamnonkitty.com/webroot/img/posts/files/vewupujiketaxulodasinibuk.pdfIn PDF document text
    • http://www.mearesandassociatesllc.com/siteuploads/editorimg/file/76120052328.pdfIn PDF document text
    • https://almoheetmanpower.com/public_html/userfiles/file/84121263919.pdfIn PDF document text
    • http://hawks79.com/clients/85064/File/94328359063.pdfIn PDF document text
    • https://alismobile.co.uk/wp-content/plugins/super-forms/uploads/php/files/9d181dbaa7fb4039cd7bd9a26eae2835/tapudotaro.pdfIn PDF document text
    • http://www.webtony.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b4fe5316f75---25364161388.pdfIn PDF document text
    • http://www.village-gaulois.org/gestion/ckfinder/userfiles/files/64567764870.pdfIn PDF document text
    • http://eotp.info/sites/default/files/fck/file/61739791907.pdfIn PDF document text
    • http://marthomaiticherukole.com/userfiles/file/63489047713.pdfIn PDF document text
    • http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/6884926cc29f90ba77da4f5182e7e804/wuzulemofavebimobibubaw.pdfIn PDF document text
    • http://www.findvoters.com/userfiles/file/77113840839.pdfIn PDF document text
    • http://iccjsc.com/images/uploads/files/47912742483.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_off0000c0f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0F5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d90c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD90C 11304 bytes
SHA-256: 63771329d3c5c4543221d758c0730a0a68bb2b9713553a4d5ffcd18b8cf51a7d
font_02_sfnt_off0000f346.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF346 17856 bytes
SHA-256: 09cd311059d96217242a2eccb3e019f92ae42085988d73517f2a02eb94f28e0c

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