Malicious PDF — malware analysis report

Static analysis result for SHA-256 5eaf00bdebbe9947…

MALICIOUS

PDF

94.2 KB Created: 2021-08-14 17:45:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: f4ce2e019be841aaa91b88b09bb01e47 SHA-1: faa5369e9e98b471a6cb1792d75763166295859d SHA-256: 5eaf00bdebbe9947b78461454e671deed02e3bd53a180e1362851a5e637282ee
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to compromised WordPress upload directories hosting other PDF files. This pattern suggests a phishing or malware distribution campaign, likely initiated via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8310

Heuristics 5

  • 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
  • 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://blueridgelightingandcontrols.com/wp-content/plugins/super-forms/uploads/php/files/7f42b8f9be42bcd5797a9e58adfde37c/fabowub.pdf In PDF document text
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/1606cba93aded0---84156829375.pdfIn PDF document text
    • https://orldoc.ch/wp-content/plugins/super-forms/uploads/php/files/s1d97be7mi4q0rqme4atpsmap1/53934322542.pdfIn PDF document text
    • https://www.isgs.org/wp-content/plugins/super-forms/uploads/php/files/e85522df4a2417ccd6e97f8123377ae8/50315080206.pdfIn PDF document text
    • https://www.stamfordtaxis.com/wp-content/plugins/super-forms/uploads/php/files/snhjc1on1hi5k2fqc4pe7eo0p4/37326129722.pdfIn PDF document text
    • https://samsunyapi.com/userfiles/files/suxuxesixajip.pdfIn PDF document text
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609063c44c21b---jegifa.pdfIn PDF document text
    • http://unseretochter.com/images/file/riwim.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c95061470e7---60881707732.pdfIn PDF document text
    • https://masterpieces-mallorca.com/wp-content/plugins/super-forms/uploads/php/files/3a623c2f19cec347768772737c4e7670/mixarozixod.pdfIn PDF document text
    • https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/160948b90834aa---66097830995.pdfIn PDF document text
    • https://vinisfarm.com/wp-content/plugins/super-forms/uploads/php/files/9dff11703d2312d8c014fbc7d1e09207/toroselivanud.pdfIn PDF document text
    • https://ystechpro.com/nbloom/fckuploads/file/bijesoj.pdfIn PDF document text
    • https://reniuved.it/file/refir.pdfIn PDF document text
    • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080eb10be349---jugejitirus.pdfIn PDF document text
    • http://bkdesign.ee/userfiles/file/25639273565.pdfIn PDF document text
    • http://amoy-art.com/Upload/file/sivamiruwabotofenozenuke.pdfIn PDF document text
    • https://youstore21.com/wp-content/plugins/super-forms/uploads/php/files/a3063f66ffa079b705405ab62b56691d/dozujokewezit.pdfIn PDF document text
    • http://americandeliorder.com/uploads/files/gumajuw.pdfIn PDF document text
    • http://evpltravel.com/xv_image/file/rotesepejesesu.pdfIn PDF document text
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cfe8033c154---44981392926.pdfIn PDF document text
    • https://pass-eco-energies.com/ckfinder/userfiles/files/babolaxitexu.pdfIn PDF document text
    • http://asirius.su/wp-content/plugins/super-forms/uploads/php/files/39b167d4eb7f261b4342d5746ee3d459/pikepomukozekuku.pdfIn PDF document text
    • http://granite1962.com/clients/869125/File/nifidekewimoturonowov.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=como+quitar+la+herramienta+cuadricula+de+perspectiva+en+illustratorPDF link annotation

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