Malicious PDF — malware analysis report

Static analysis result for SHA-256 59ee0028084a8bb4…

MALICIOUS

PDF

77.6 KB Created: 2021-09-13 07:22:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: 95465bd94b41a5be11878f29d642d65e SHA-1: cb339d3b4adfb3919f2341edb597e50337f04014 SHA-256: 59ee0028084a8bb4b6061a412979ab537fa99d72d145ef07c40bff583017ce55
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links pointing to various domains, many of which are identified as a link farm on disposable hosting. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery. The embedded URLs and link farm structure suggest an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6548

Heuristics 5

  • 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
  • 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://sweet-sugar.de/images/uploadedimages/file/9987771807.pdf In PDF document text
    • https://aordonez.com/images/contenidos/files/47687207469.pdfIn PDF document text
    • http://annamsaigonlaw.com/upload/files/94870064855.pdfIn PDF document text
    • https://lengthening-sldf.com/userfiles/file/35822342928.pdfIn PDF document text
    • http://dynamic1984.com/user_file/file/89459656332.pdfIn PDF document text
    • http://annassteen.com/ckfinder/userfiles/files/82828350646.pdfIn PDF document text
    • http://baohanhranghm.com/upload/img/files/zuwakijepiwoworalab.pdfIn PDF document text
    • http://valsadindustries.com/userfiles/file/migibitegabupotobubufado.pdfIn PDF document text
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f1bb948629---32874315727.pdfIn PDF document text
    • http://bfr-bialapodlaska.pl/userfiles/file/gusasifawo.pdfIn PDF document text
    • http://futboltotal.net/images/files/46853226357.pdfIn PDF document text
    • http://animationcoach.com/userfiles/file/55567174999.pdfIn PDF document text
    • http://ei-windykacja.pl/upload/file/9498449233.pdfIn PDF document text
    • http://rollfactorytogo.com/uploads/files/48908977745.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/djdpaf5ljepjb5br483ai7kjbf/21106965933.pdfIn PDF document text
    • https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/ed67262050cf3af83fab71b2d4e210be/5259549377.pdfIn PDF document text
    • https://wittnebel.dk/file/jidunexiparabojepapij.pdfIn PDF document text
    • http://wedding-box100.com/uploads/files/202109091920219029.pdfIn PDF document text
    • https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d5d21a8b7d---97389836949.pdfIn PDF document text
    • http://hftyby.com/upload_fck/file/2021-9-12/20210912192149605942.pdfIn PDF document text
    • http://preiss.at/upload_files/files/4089002955.pdfIn PDF document text
    • https://kungfuclasshongkong.com/louis/taichi/ckfinder/userfiles/files/33519345277.pdfIn PDF document text
    • http://shtaket46.ru/page_edit/_samples/userfiles/files/xamari.pdfIn PDF document text
    • https://powermailer.in/userfiles/file/88137514442.pdfIn PDF document text
    • https://rajaketiga.com/contents/files/kiwudufopoz.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=augmenter+ram+tablette+androidPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000100f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100F7 10644 bytes
SHA-256: df94f688bb8a973119823c68674cc53e2746bf79195ad92812c1680dc59422c8

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