Malicious PDF — malware analysis report

Static analysis result for SHA-256 7da90d1d6aefe8c8…

MALICIOUS

PDF

52.6 KB Created: 2021-02-15 08:11:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: bce6f4847a89a7cb1e344de81b16ea04 SHA-1: 16d9d4d514cbe1bea83b644643a2c69d559046e7 SHA-256: 7da90d1d6aefe8c8cbe648fca81436a1198fac0d3c7b99baeacc91c6488477b1
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a critical finding for a link farm and a ClamAV detection for Pdf.Phishing.Trojan. The embedded URLs and the PDF structure indicate an attempt to redirect users to external, potentially malicious websites. No scripts were extracted, but the overall pattern suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8557

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://jottigo.ru/aws?utm_term=cinch+audio+recorder PDF link annotation
    • https://nofefikow.weebly.com/uploads/1/3/4/5/134510094/rinoxeguf-girabuzilo-zobexisexodatuj-jufemedif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412606/normal_601e734b16df6.pdfIn PDF document text
    • https://rudagaje.weebly.com/uploads/1/3/4/3/134310377/kogadi_jebivegutex.pdfIn PDF document text
    • https://zuzivosojix.weebly.com/uploads/1/3/0/7/130775151/3361635.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420036/normal_601d13a4e70aa.pdfIn PDF document text
    • https://taxedomarofagu.weebly.com/uploads/1/3/1/3/131378921/pefupad.pdfIn PDF document text
    • https://nusisudarebo.weebly.com/uploads/1/3/4/3/134349377/nexijariru_zidemefojiza.pdfIn PDF document text
    • http://extrameets.fun/9621808470okj2f.pdfIn PDF document text
    • http://firstdoctor.xyz/wodetaril95d4p.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/63087946219.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/groin_strain_rehabilitation.pdfIn PDF document text

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