Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f9b88ac7c21e39f…

MALICIOUS

PDF

64.0 KB Created: 2021-05-30 10:56:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 6d5f9eff2fd0deb68fc424167f0fd372 SHA-1: 8fe39963c3c09cb43ffbaa34145597693a30194a SHA-256: 3f9b88ac7c21e39f7eac1561d6e0f1e81f11cefa781a22cc04f9b0f989632518
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV. 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 suspicious score 0.3561

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
  • 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://resalured.ru/strik?utm_term=mcse+training+material+pdf PDF link annotation
    • https://mitegasur.weebly.com/uploads/1/3/1/8/131871816/42d094b0f7.pdfIn PDF document text
    • https://xumulevaz.weebly.com/uploads/1/3/5/3/135348617/6c6bb09.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489440/normal_5ff81dd1559e6.pdfIn PDF document text
    • https://dukazisilibe.weebly.com/uploads/1/3/4/6/134679988/wanapadawemak_lutexupe_gopalabeko_viwilepobagup.pdfIn PDF document text
    • https://kesegupopu.weebly.com/uploads/1/3/4/1/134131766/1b51eb.pdfIn PDF document text
    • https://duzufekiwavana.weebly.com/uploads/1/3/4/6/134609718/fb3941dd635b8.pdfIn PDF document text
    • https://wivexisi.weebly.com/uploads/1/3/1/0/131070498/2036782.pdfIn PDF document text
    • https://fipubizibogu.weebly.com/uploads/1/3/0/7/130775584/noguduli.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457572/normal_5fdc7222056fe.pdfIn PDF document text
    • https://nepufetok.weebly.com/uploads/1/3/1/4/131438640/numufupavi.pdfIn PDF document text
    • https://serabonileraso.weebly.com/uploads/1/3/4/4/134444783/1340104.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416919/normal_601d21371d597.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416319/normal_5fece79a0217a.pdfIn PDF document text
    • https://fenazimo.weebly.com/uploads/1/3/4/4/134437137/fukulepiximetasa.pdfIn PDF document text
    • https://mirovufi.weebly.com/uploads/1/3/5/9/135958785/1550300.pdfIn PDF document text
    • https://xuzelakojit.weebly.com/uploads/1/3/4/5/134593048/413d106f83a1.pdfIn PDF document text
    • https://jitavemalidev.weebly.com/uploads/1/3/1/8/131871699/juzovutif.pdfIn PDF document text
    • https://doliwejivus.weebly.com/uploads/1/3/4/3/134353379/6061811.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa04efcf-ff6b-44b8-912a-8291d85ceab7/28005138352.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ded679c1-545e-47c5-ad7f-7ae1f269d3e1/best_screen_capture_software_free_windows_7.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52da2924-54cd-4abf-a23c-5a1501f2aa5e/how_to_silence_a_beeping_smoke_detector.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/712ff9e8-8035-48ca-a766-84227efe3ed6/how_to_complete_an_incomplete_f_table_0.05.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/798352a5-cd15-4f93-9eeb-b35aa810c890/jonakedutomurok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a18acf92-09bb-4fe2-a6a8-4ac42101a377/harry_potter_book_3_illustrated.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c6134bc-b4ee-4186-a35b-03dd63fc53f2/67460900748.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f60f78b-e692-4110-9ae8-525a4e72c324/zukitazesogemukivowa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/763b0073-87fc-49cb-b170-a20702e3fa8f/tifali.pdfIn PDF document text

Related samples 8

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