Malicious PDF — malware analysis report

Static analysis result for SHA-256 03a13348610eb678…

MALICIOUS

PDF

64.0 KB Created: 2021-09-06 23:04:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: c4656843fd8d0c365d71ca9c40132fe6 SHA-1: d555876cea22ec5c60e35524db012db9171f0b78 SHA-256: 03a13348610eb678750c80e20fc7005a3c573a3ac661164128ddf9c5b421f12e
154 Risk Score

Malware Insights

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

The PDF contains numerous links to compromised websites, indicating it functions as a link farm to distribute malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely to lure users to download further malware or engage in phishing. The file's structure and URL patterns are consistent with a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5089

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://coretry.ru/uplcv?utm_term=acura+2018+rdx+brochure+pdf PDF link annotation
    • https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/78d9e7b7b8f1e39f771bc0f2681ac574/segow.pdfIn PDF document text
    • https://aluminiosarla.com/userfiles_arla/files/45261632907.pdfIn PDF document text
    • http://jonme.net/ckupload/files/bupigefijuzefidomobad.pdfIn PDF document text
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f1ba33b156a---73839203824.pdfIn PDF document text
    • https://airbays.com/userfiles/file/lonoxu.pdfIn PDF document text
    • http://hart-metale.pl/gimnazjum/userfiles/file/44544816577.pdfIn PDF document text
    • http://aifamilyreunion.com/clients/59202/File/gefolozomikoduzovelako.pdfIn PDF document text
    • https://srmhospitalities.com/images/bulk_images/files/87956511475.pdfIn PDF document text
    • http://diagonal.org.ar/wp-content/plugins/formcraft/file-upload/server/content/files/160bfbb63ce301---27058498853.pdfIn PDF document text
    • http://telegid.tv/userfiles/file/fobasimasopakikekapimugir.pdfIn PDF document text
    • http://ahdongjiu.com/upload_fck/file/2021-5-2/20210502050503290619.pdfIn PDF document text
    • https://www.infrascale.com/wp-content/plugins/super-forms/uploads/php/files/8c1d7844d92402d0d39bde256b23a0d4/99273789601.pdfIn PDF document text
    • https://myhoorayhealth.com/wp-content/plugins/super-forms/uploads/php/files/a2ee66dad3b4384b957bcbb855bca24a/riruludenudadijegusim.pdfIn PDF document text
    • https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/3f17968e648dc9861664f8a515fd55be/bikefeli.pdfIn PDF document text
    • https://seataclightingalaska.com/wp-content/plugins/super-forms/uploads/php/files/d27fbb4619cc4a9a26de958d76ad4913/werunesiwepetewaxumaf.pdfIn PDF document text
    • http://raiders71.com/clients/4/41/4134020f2f298c111575624a380fabfc/File/22012531412.pdfIn PDF document text
    • http://tiszaikaland.hu/upload/file/palas.pdfIn PDF document text
    • http://shophouse.info/images/files/65055545601.pdfIn PDF document text
    • https://faceless.me/userfiles/files/48087227802.pdfIn PDF document text
    • https://murtenhof.ch/userfiles/files/26623879011.pdfIn PDF document text
    • http://bennett-legal.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/50266130140.pdfIn PDF document text
    • http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/160a575908487f---mafasagirazewukerari.pdfIn PDF document text
    • http://automsystem.com/UploadFile/file/20210715145654526.pdfIn PDF document text

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