Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a45c7b97ddd11e1…

MALICIOUS

PDF

58.0 KB Created: 2021-03-30 17:52:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 24ecc46e15b9ecd35c52a8962ff26ab5 SHA-1: 43f7a5f16eb3e44857103861d8b6b375a1e08637 SHA-256: 1a45c7b97ddd11e10e7d56fd3cca80e626f5e36b652076b597593f338e4830d9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which are obfuscated or point to potentially malicious domains, indicating a link farm or phishing attempt. The ClamAV detection and ML classifier further support its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it is designed to redirect users to malicious content or facilitate further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5491

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://golowaki.ru/strik?utm_term=how+to+write+a+scientific+research+grant+proposal PDF link annotation
    • http://usecabinets.xyz/911641887995q8wp.pdfIn PDF document text
    • http://tosety.xyz/request_approval_letter_formatykn9r.pdfIn PDF document text
    • http://haustova.com/lowulogutabavowy4ui.pdfIn PDF document text
    • http://appletopshop.ru/dijukakixaladxvc7p.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490375/normal_6006e7476a136.pdfIn PDF document text
    • http://henrysavbr.site/jam2_speaker_not_pairingf46i0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473432/normal_605c416b9fca4.pdfIn PDF document text
    • https://7aff118d-26f6-4d76-9bc9-1838009e7274.filesusr.com/ugd/f80014_4d28701340234381b6ec349b4151079e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/bdb694ae-09c3-41ef-bf76-962a3894547f/anti-_theft_alert_system_using_atmega8_microcontroller.pdfIn PDF document text
    • https://30d6ba4c-d201-4e26-8f31-a0e059b28788.filesusr.com/ugd/f9b8bb_bbaf00cfcf414e30a153add2c7e98284.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wutogugej/2005_ford_f250_6.0_diesel_oil_weight.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58f7db89-7f22-457a-b93b-730cada49f1c/58932491995.pdfIn PDF document text
    • https://s3.amazonaws.com/vavejijitatofu/mupemugaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c90e4a81-1472-4eb9-b46b-2b7428ea1bf2/guidelines_for_the_development_of_shipboard_oil_pollution_emergency_plan_sopep.pdfIn PDF document text
    • https://s3.amazonaws.com/legobegutulo/49069133369.pdfIn PDF document text
    • https://s3.amazonaws.com/ropidadegaxut/27832518524.pdfIn PDF document text
    • https://s3.amazonaws.com/mixanaz/10975976371.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/letterhead_design_template_psd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/166acf57-b2a7-4c68-8077-03bb0f599b52/what_is_the_message_of_the_story_the_necklace.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/amie_exam_form.pdfIn PDF document text
    • https://f815f12b-539f-4060-8ed9-abd2caada31b.filesusr.com/ugd/ceb2e8_8d2ed9bf3464430ba8b8828f12b4853b.pdf?index=trueIn PDF document text
    • https://e791dc30-71fd-4519-a75e-453748eb9c32.filesusr.com/ugd/8a5fcf_8e44e33a571a4f78ae9d4f8410cd9660.pdf?index=trueIn PDF document text
    • https://88966db1-4a83-4446-b941-f65022a6235f.filesusr.com/ugd/928e0f_ba620d3693134f01bbc5f372ee68d037.pdf?index=trueIn PDF document text