Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea973eef8bc2c957…

MALICIOUS

PDF

49.6 KB Created: 2021-03-05 21:47:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 52df342bc29064a0590032e5a7862917 SHA-1: 36ef01b283c9c2d9fea93a0e1b4e4642de63b107 SHA-256: ea973eef8bc2c957b17a1cfe42754eb5d27795e3d7bbb9d9dc3bfbc1726900de
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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 0.8642

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://nipisod.ru/strik?utm_term=what+is+ticker+symbol+for+s%2526p+500 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4426088/normal_5fefb411e43ba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494891/normal_5ff298d0ae338.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368751/normal_601cfbbacdc5e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370307/normal_5fedd52259887.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/24133670609.pdfIn PDF document text
    • https://6a9ecc2b-05c3-4056-8705-773ae6be8cdd.filesusr.com/ugd/7a359d_56906d85081643b1b2537d76ab9cf9b3.pdf?index=trueIn PDF document text
    • https://83f018a0-8e49-44f0-b57e-805e464a5f06.filesusr.com/ugd/10a4aa_bdd4318b05644d08bf0d0ad8d5a5fdb2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/muvazi/company_intro_presentation_template.pdfIn PDF document text
    • https://ab25a8b3-4d80-4d4b-93a1-c1347014fa7c.filesusr.com/ugd/8d0191_e0e84ed7b2dc4f87a4022c37c5a91186.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/bipomunor.pdfIn PDF document text
    • https://s3.amazonaws.com/dejazuvorira/east_of_eden_salinas.pdfIn PDF document text
    • https://e18e6c05-101e-4f41-9c4d-f518aea09dbb.filesusr.com/ugd/7972b3_8580b0cc55b24256960abf82d82918a6.pdf?index=trueIn PDF document text
    • https://d09251a9-b09e-4077-8ccb-24037f005f7b.filesusr.com/ugd/a6ce17_e506ab64b8b24373bfb8d24ff40ddc90.pdf?index=trueIn PDF document text
    • https://ba739632-11db-41f7-a023-683a20e55d36.filesusr.com/ugd/99835b_264bf36258604ea4bbeee89b914f021b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/home_loan_emi_calculator_excel_sheet.pdfIn PDF document text
    • https://ede8a7a3-2377-4e09-926a-401222b31c25.filesusr.com/ugd/81c89d_167cf511e1e144838cf0a1a3c6c273fa.pdf?index=trueIn PDF document text
    • https://7c3dd69e-6649-485e-b385-36acc2971cd6.filesusr.com/ugd/cf9ff1_57a67746ad094106ba0ebd72763edd7a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/libro_alter_ego_b1.pdfIn PDF document text
    • https://667abc8f-92ca-45d9-bc9d-789c80a68858.filesusr.com/ugd/dcd78f_96f8e8ae984b4a539f259f5585b3e52a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nafoxuda/wosovukubazuzebunomex.pdfIn PDF document text
    • https://441768bb-9839-4df4-8f78-dd1233b527f6.filesusr.com/ugd/7e6080_d55a09765127436fa13ea53dd8dba79a.pdf?index=trueIn PDF document text