Malicious PDF — malware analysis report

Static analysis result for SHA-256 7165aedead8aaea2…

MALICIOUS

PDF

68.7 KB Created: 2020-11-26 12:39:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 455bce031027ad6b429a2fb7e2d42b06 SHA-1: e105796a539ff4c6946e801e78aa76bc08aba22d SHA-256: 7165aedead8aaea214818c3ba113a50ae899d31df349850a0b9b259c64267003
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains a large number of external links, including one to 'traffnew.ru', suggesting a link farm or redirection to malicious content. The PDF structure and embedded links indicate an attempt to direct users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://traffnew.ru/strik?utm_term=implementing+domain-driven+design+pdf PDF link annotation
    • https://mekuxiwefajup.weebly.com/uploads/1/3/0/7/130739023/melemunus.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481156/normal_5fbeebc842c7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374978/normal_5fb48e1a2fcac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489050/normal_5fbf464d2a8c5.pdfIn PDF document text
    • https://nedudefo.weebly.com/uploads/1/3/4/3/134389218/lovizupot-miniv-witudimi.pdfIn PDF document text
    • https://worozimovazez.weebly.com/uploads/1/3/1/4/131406108/2470299.pdfIn PDF document text
    • https://jabezenenadako.weebly.com/uploads/1/3/4/2/134234778/woliguluziduvi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489595/normal_5fbea228cdd77.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/rearranging_pages_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58f97398-8ce2-43ee-91dd-5c316cf1396d/chardee_macdennis_level_3_cards.pdfIn PDF document text
    • https://s3.amazonaws.com/lemefofutomapox/mauricio_reinoso_md_pulmonary_sugar_land.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41b7d08b-c9cf-41ba-9d5b-42104441309e/33320307116.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE77 5388 bytes
SHA-256: 884767ac1ed8cb544460a0bf05642fb027ebee6ed5f301f4aaa4f2582b3e324f
font_01_sfnt_off0000e0c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0C5 10952 bytes
SHA-256: 60beeab2966f6c8463381459aedfb461f4ec54cf2b91ef801ce7088d04a88697

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