Malicious PDF — malware analysis report

Static analysis result for SHA-256 79ceacc055a03def…

MALICIOUS

PDF

65.5 KB Created: 2021-05-16 23:04:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 0b3da409381b78dc8cdeaaa5f44926ea SHA-1: 9ac91187f1d60730e1d97d148562acb2a0b5580e SHA-256: 79ceacc055a03deff2f943385db4e812ca489080e8c97d8c9ab0a2cff532fbbb
184 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9590

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://midufefew.ru/strik?utm_term=how+to+verify+cash+app+account+on+apple+pay PDF link annotation
    • https://juxatameserog.weebly.com/uploads/1/3/0/9/130969062/xizikusozeta.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410695/normal_603e2880e0024.pdfIn PDF document text
    • https://fedofiri.weebly.com/uploads/1/3/2/6/132681193/xemawus.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451737/normal_6023c949cd3e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471690/normal_6034257402c65.pdfIn PDF document text
    • http://pomirkapa.site/97487271587mzvgn.pdfIn PDF document text
    • http://bluetea.space/puvubosetpowrj.pdfIn PDF document text
    • http://wisecredit.info/4857443629723euc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489848/normal_5fee1f592311d.pdfIn PDF document text
    • https://xadebunurag.weebly.com/uploads/1/3/1/4/131454816/5300149.pdfIn PDF document text
    • http://vitrinachel.ru/ensayo_del_libro_el_arte_de_amar_erich_frommuevjg.pdfIn PDF document text
    • https://zidereromozuj.weebly.com/uploads/1/3/4/6/134602294/4111759.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408863/normal_5fd7a10b18ac7.pdfIn PDF document text
    • http://disclosures.space/64896116812mbocg.pdfIn PDF document text
    • https://82cb18f6-4a40-4824-ac11-10070f72ce02.filesusr.com/ugd/5aec95_72f6becbd615411a9d62a7db690e81f4.pdf?index=trueIn PDF document text
    • https://a52dd608-e7dd-4d50-8005-e0fd7a3896b4.filesusr.com/ugd/43d2fc_436cc2aa173444cabd1d26bce55cf826.pdf?index=trueIn PDF document text
    • https://b3a1a1c9-4f8f-4fb8-b7cc-7339030cc889.filesusr.com/ugd/162fe6_f638bd86531b47cb90b1d3dca4a35ac0.pdf?index=trueIn PDF document text
    • https://5e73d190-47a4-4ead-99bf-7e9069f06a16.filesusr.com/ugd/55cc32_77f0bb864ac64c499a1c3f94b32610ee.pdf?index=trueIn PDF document text
    • https://83c30a2d-d83c-4020-88f4-fdb7bed8c9e2.filesusr.com/ugd/e59e18_0d8fd4ac493545d693e076e3448104f1.pdf?index=trueIn PDF document text
    • https://fc06435f-e709-4c80-b59d-96fa470c1a13.filesusr.com/ugd/bdc04d_5bf0da7767d748379db2c93b4638a437.pdf?index=trueIn PDF document text