Malicious PDF — malware analysis report

Static analysis result for SHA-256 d14adab008705607…

MALICIOUS

PDF

50.6 KB Created: 2021-03-08 21:06:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: e31e75632448694a4e3a4aadd785d0ea SHA-1: c719d30a3ea6061792da22da842823c824269109 SHA-256: d14adab0087056072ecf3c6114f04d032ea56ee681e3471bc00ec4fb4fd0e5a4
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many pointing to S3 buckets, characteristic of a link farm or SEO spam campaign. The ClamAV detection and ML classifier also indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it's designed to redirect users to potentially malicious or ad-filled websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6306

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://leonvi.ru/aws?utm_term=possessive+pronouns+exercises+grade+3 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4455884/normal_5fcb10c276448.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381544/normal_5feb6d25d7916.pdfIn PDF document text
    • https://pananufizusa.weebly.com/uploads/1/3/4/4/134445813/9536a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470687/normal_60413933d65ef.pdfIn PDF document text
    • https://sobidoduwipiver.weebly.com/uploads/1/3/1/4/131406433/fozabojopu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446270/normal_6000c1d705fae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479905/normal_5fd9e8e46d60b.pdfIn PDF document text
    • https://junobinedutuki.weebly.com/uploads/1/3/2/7/132712306/gavusalag.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482402/normal_5fee0737db230.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412899/normal_5fd5eff0e9720.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417129/normal_6033959f426e2.pdfIn PDF document text
    • https://xodozevonewoze.weebly.com/uploads/1/3/1/3/131384462/bibokesoke_fizija_denip_fazul.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453732/normal_6008089af0611.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387581/normal_601418eb5f4c4.pdfIn PDF document text
    • https://makifilibavik.weebly.com/uploads/1/3/5/3/135383918/liroxuw_vomosadivakum_lorexudoke_wubogowobi.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/my_bot_clash_of_clans_free.pdfIn PDF document text
    • https://s3.amazonaws.com/juzewojavomofew/kolibatikuvewezoxaxoluxol.pdfIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/rizagufuwu.pdfIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/dujubazikizupifironopog.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/vutuxekelusinemopa.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/brochures_template_publisher.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/xuvozajovejejipu.pdfIn PDF document text
    • https://s3.amazonaws.com/nijosinizo/4253723100.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/aortic_root_aneurysm_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/xomepixo/nine_fruits_of_the_holy_spirit_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/pamefaf.pdfIn PDF document text
    • https://s3.amazonaws.com/pobixedele/vafurafu.pdfIn PDF document text
    • https://s3.amazonaws.com/befafuni/bleacher_report_nfl_week_7_score_predictions.pdfIn PDF document text

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