Malicious PDF — malware analysis report

Static analysis result for SHA-256 75b93329a568a1b5…

MALICIOUS

PDF

62.3 KB Created: 2021-09-23 05:01:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: bb896558ede6ad6b4dcdad3d7087bbbc SHA-1: 4d83f9c0ae7890b1a41e8b7d86f77ad5990be27f SHA-256: 75b93329a568a1b5daef47fad10f83300ef7b50b2f07d3575cb78be9cad8a3bd
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which are hosted on disposable domains or compromised CMS uploads, indicating a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier further support its malicious nature, classifying it as a phishing trojan. While no scripts were explicitly extracted, the structure and URL patterns are consistent with phishing lures and malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5897

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://queure.ru/uplcv?utm_term=game+simulator+pesawat+apk PDF link annotation
    • http://orlickachata.cz/files/files/gefaxapemujatuk.pdfIn PDF document text
    • http://riskhedgetech.com/uploaded/file/12970235866136859ea57c3.pdfIn PDF document text
    • http://kledingindex.nl/images/uploads/kagemusukipewarulavar.pdfIn PDF document text
    • https://shiksha24.com/userfiles/files/laguxawosixup.pdfIn PDF document text
    • http://m2m2design.com/userfiles/28283409942.pdfIn PDF document text
    • https://pierreseche.fr/userfiles/file/43771118173.pdfIn PDF document text
    • http://kondicionery-vidnoe.ru/upload_picture/file/84933962491.pdfIn PDF document text
    • http://bangtutrang.com/upload/files/80152427627.pdfIn PDF document text
    • http://pallenberg-busreisen.de/uploads/files/zodomapisikixakokijofupez.pdfIn PDF document text
    • http://karthikeyanjayaram.in/userfiles/file/mufuminebeje.pdfIn PDF document text
    • https://masterpieces-mallorca.com/wp-content/plugins/super-forms/uploads/php/files/c5ccc6c75092d468ab361775f8df3ece/lunev.pdfIn PDF document text
    • https://minipowerpack.net/upload/files/99765122333.pdfIn PDF document text
    • http://german-ex.com/images/blog/file/bogazuxalu.pdfIn PDF document text
    • https://flyags.com/editorResources/file///51569740815.pdfIn PDF document text
    • http://megamento.com/_UploadFile/Images/file/99560993303.pdfIn PDF document text
    • https://careersourceokaloosawalton.com/files/public/63713886644.pdfIn PDF document text
    • https://avantkart.com/wp-content/plugins/super-forms/uploads/php/files/jvfv16tcv0jsfl3jbs61l79jq1/64295428872.pdfIn PDF document text
    • http://craftland.de/res/wysiwyg/file/16982283509.pdfIn PDF document text
    • https://dazhonghua1688.com/ckfinder/userfiles/files/dinofobijidivusopigipas.pdfIn PDF document text
    • https://www.sibirprokat.ru/ckfinder/userfiles/files/42830797048.pdfIn PDF document text
    • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1613f39f06ae67---32447395719.pdfIn PDF document text
    • http://gardatrans.com/content/Files/kamunev.pdfIn PDF document text
    • http://themultifold.com/wp-content/plugins/super-forms/uploads/php/files/650uo2a4k18i4kj5h1219qijk7/fulimowipu.pdfIn PDF document text

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