Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bda032a606a1203…

MALICIOUS

PDF

44.2 KB Created: 2021-10-04 03:28:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: ab1e595271226963e74c679a7c3b4e04 SHA-1: e14a09be93cad0386a1c59e33220bfd31d145489 SHA-256: 7bda032a606a12034399dd5657f8a6129858a781049be188e82cd5f623e793c4
154 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised websites or disposable domains, suggesting a phishing or malware distribution lure. The ClamAV detection and ML classifier strongly indicate malicious intent. The document's structure as a link farm, combined with the compromised CMS upload links, points towards an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7664

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 https://crewmak.ru/uplcv?utm_term=gedore+tools+catalogue+pdf PDF link annotation
    • https://centrumschoolka.pl/photos/file/sogulabawine.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/cc8e2735f082de83a433ab6b121d5edd/zejiripepowinokowafu.pdfIn PDF document text
    • http://www.bluefashion.cz/ckfinder/userfiles/files/71451339044.pdfIn PDF document text
    • http://sdes.in/uploads/dobewi.pdfIn PDF document text
    • https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/9ee0be4dfa74cade308f3188a1ccda49/70326461848.pdfIn PDF document text
    • http://klm-co.ru/foto/ck/files/98279707966.pdfIn PDF document text
    • http://tokstar.com/_UploadFile/Images/file/fusunefobujaserojavaxo.pdfIn PDF document text
    • http://zafirkort.com/uploads/files/selakirarajojubepifem.pdfIn PDF document text
    • https://hopefor.today/wp-content/plugins/super-forms/uploads/php/files/49f77e2ad5ea4834715e4c566341f019/seguwadavixakararimi.pdfIn PDF document text
    • http://www.juniorcollege.cl/ckfinder/userfiles/files/sovekebifofapewagexaf.pdfIn PDF document text
    • http://gernano.eu/gfx/userfiles/files/vupalinofesemi.pdfIn PDF document text
    • http://dayou.tw/uploadpic/files/202109122245173316.pdfIn PDF document text
    • https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/bv7ldgm60i40va5ademfoj9kov/volozoxijalaxeta.pdfIn PDF document text
    • http://faw-asia.com/image/upload/files/64961651537.pdfIn PDF document text
    • https://ozora.schaffsen.com/contents/file/38920166398.pdfIn PDF document text
    • http://bjjiffy.com/upload/zixozamesopulo.pdfIn PDF document text
    • https://njsolarpower.com/wp-content/plugins/super-forms/uploads/php/files/3df851c56737fd71756d6f9da233ed6a/41784114131.pdfIn PDF document text
    • http://architettodrabeni.it/userfiles/files/5179810446.pdfIn PDF document text
    • http://geredekombiservisi.com/userfiles/file/vubifavesituwama.pdfIn PDF document text
    • https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139ab5dda891---76114419356.pdfIn PDF document text
    • http://hoteldanang.com/uploads/images/files/lutovefagumomumad.pdfIn PDF document text
    • http://matstravel.ru/userfiles/file/86596790094.pdfIn PDF document text
    • http://immobilieninvestors.eu/userfiles/file/paluvinemapovukenaji.pdfIn PDF document text
    • http://letnaterasa.customreal.sk/data/files/92983567169.pdfIn PDF document text

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