Malicious PDF — malware analysis report

Static analysis result for SHA-256 32472ee4412e1fb3…

MALICIOUS

PDF

59.9 KB Created: 2021-06-10 05:58:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e2e70821e6606db1b8d337af7578b281 SHA-1: 390484e50d393ac97cd273c28d2c231d4583eb00 SHA-256: 32472ee4412e1fb33baeb8650418752901b8fdc84ca83fe32e6470ef20ae459a
184 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.6619

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://coretry.ru/pbw?utm_term=nms+portal+interference PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4445104/normal_60436e041d1c2.pdfIn PDF document text
    • https://wunevebisa.weebly.com/uploads/1/3/5/3/135306556/08b14a23a5.pdfIn PDF document text
    • https://ravusosu.weebly.com/uploads/1/3/4/5/134589623/tumowuwaruruf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474465/normal_605c0aa868720.pdfIn PDF document text
    • https://pavovebowejimop.weebly.com/uploads/1/3/1/6/131607108/kaxezemugoloko.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379054/normal_6012baf1b35ee.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366359/normal_5fc812a6952cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385004/normal_6037f9b9ecc8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404310/normal_6058ef1195316.pdfIn PDF document text
    • https://sijetuso.weebly.com/uploads/1/3/4/4/134499475/monetanigor-pepixojewumato-zexetunizutekof-wisopimamugezem.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418365/normal_5fd39c8422e4b.pdfIn PDF document text
    • https://vafoxerosasajox.weebly.com/uploads/1/3/5/3/135398531/9202833ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369328/normal_60b968626724b.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fff52f0-cb33-4a94-b4e6-db63f4d86f68/financial_peace_university_free_forms.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3325e4d8-17a1-40d9-92ea-407cecf4e86e/92013422807.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c47b78c-083f-416a-8951-1b983a3901fa/cub_cadet_super_lt_1554_deck_belt_part_number.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2951ba80-47a1-4385-a1cd-49e503e536b5/zen_in_the_art_of_archery_essay.pdfIn PDF document text
    • http://fuxedemama.pbworks.com/f/meditations_2_descartes_summary.pdfIn PDF document text
    • http://jumedew.pbworks.com/w/file/fetch/144997578/clearing_cache_data_android.pdfIn PDF document text
    • http://dokajawema.pbworks.com/f/roblox_jailbreak_mod_menu_download_android.pdfIn PDF document text

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