Malicious PDF — malware analysis report

Static analysis result for SHA-256 03e6b9593eeb053a…

MALICIOUS

PDF

59.1 KB Created: 2021-03-03 22:39:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 0d97107227b8402cd95d2eb14b809915 SHA-1: 20e52c738bf76765870c0fc20c6217780eff08aa SHA-256: 03e6b9593eeb053a818e76bb79ae0d975444f85c9684a19410d2c4b913ae6450
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, many of which are part of an SEO link farm designed to redirect users. The primary malicious URL identified is https://baarspo.ru/aws, which is likely used to host phishing content or distribute malware. The ClamAV detection and ML classifier further support the malicious nature of this document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6847

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://baarspo.ru/aws?utm_term=dress+code+with+blue+blazer PDF link annotation
    • http://jezolagewe.iblogger.org/dobetonodusavu.pdfIn PDF document text
    • http://lekezoreg.22web.org/stardew_valley_lewis_gift_guide.pdfIn PDF document text
    • https://wunawewob.weebly.com/uploads/1/3/0/7/130775592/jawakipuwupu-ranure.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382638/normal_600b48ae0a81f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455876/normal_5fddd8620e462.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481516/normal_5fd0593e0355c.pdfIn PDF document text
    • http://fajasated.mywebcommunity.org/line_6_firehawk_1500_pedal.pdfIn PDF document text
    • https://kinijenu.weebly.com/uploads/1/3/4/6/134641264/dc7bb4f386e.pdfIn PDF document text
    • https://gapibuxox.weebly.com/uploads/1/3/2/6/132695643/tejep.pdfIn PDF document text
    • http://dojanipono.rf.gd/hospitality_sales_and_marketing.pdfIn PDF document text
    • https://s3.amazonaws.com/fikuvine/hedwig_s_theme_song_piano_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/faloretidadisugomojolax.pdfIn PDF document text
    • https://s3.amazonaws.com/nowonovege/puxapanirixoditemesezod.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzamada/sedalaledumizab.pdfIn PDF document text
    • https://s3.amazonaws.com/bomifabipi/76169154636.pdfIn PDF document text

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