Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c7bc45ecf98c130…

MALICIOUS

PDF

93.7 KB Created: 2021-09-06 20:50:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 2ac083939a6351bcdf2b7042fa32e61d SHA-1: ddae946b049fa79a01203dad16c7884ff7dcc2fb SHA-256: 5c7bc45ecf98c1302ec5c21e9edcf2a1c9897ee596fd5a92ccbe98b9acae6677
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to numerous domains, many of which appear to be compromised or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to trick users into downloading further malware. While no scripts were explicitly extracted, the structure and URL patterns are consistent with phishing or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5264

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://qbcar.ru/ckfinder/userfiles/files/bekogiwuziramejolul.pdf In PDF document text
    • https://pellevah.com/upload/files/74808741011.pdfIn PDF document text
    • https://spcinternational.in/ckfinder/userfiles/files/77087234502.pdfIn PDF document text
    • https://avenue102.com/uploads/file/tewewumokej.pdfIn PDF document text
    • http://torgoborud.org/images/file/soladamivok.pdfIn PDF document text
    • https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/1f30b071b05cf3c395c48551fa7e9e3c/botebijibujefumasowi.pdfIn PDF document text
    • https://travellifeafrica.com/ci/userfiles/files/tasakinu.pdfIn PDF document text
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608f1eede9ee5---pegatamebovobomaropuvusi.pdfIn PDF document text
    • http://walkofagesvt.org/clients/0/0e/0e42319052772b195a43ba3ede0f03e0/File/bejimetev.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/o31ombluie20udplmb93r0n491/kefivapitu.pdfIn PDF document text
    • http://sancheonglittletheaters.com/upload/userfiles/2021/07/files/210708180531.pdfIn PDF document text
    • http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ce570e78c5---viludafanikoni.pdfIn PDF document text
    • https://militarynetwork.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1606d9c736034b---jiloxerolu.pdfIn PDF document text
    • http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079fe902690e---sajelilupomuwoguxe.pdfIn PDF document text
    • http://aucoindeshalles.com/menu/file/vavarurigezewonezak.pdfIn PDF document text
    • http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/16080fb32c46de---bedopedibovekisid.pdfIn PDF document text
    • https://barrierball.cl/ckfinder/userfiles/files/83337181584.pdfIn PDF document text
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aaacc35a0e7---44428056016.pdfIn PDF document text
    • https://kaptenhoki.info/contents//files/80513809042.pdfIn PDF document text
    • https://marathonroller.com/userfiles/files/20081221584.pdfIn PDF document text
    • https://www.asahinadigital.com/wp-content/plugins/super-forms/uploads/php/files/tf2o3ntl6ogaa9mu15v8pai55k/vulexani.pdfIn PDF document text
    • http://emaaravm.net/upload/files/zaboje.pdfIn PDF document text
    • https://dubaimotorcycletours.com/uploaded_images/files/doxozuvetin.pdfIn PDF document text
    • http://wanyuantemple.tw/userfiles/file/182548956.pdfIn PDF document text
    • https://licorne-hotel-restaurant.com/userfiles/file/63744224070.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=the+software+craftsman+professionalism+pragmatism+pride+pdf+downloadPDF link annotation

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