Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5466cce2e3a9545…

MALICIOUS

PDF

82.6 KB Created: 2021-04-04 00:12:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 3f779757b213d5dcf2ea4dd3cc96aebb SHA-1: 2f830e83980e913d3379c8b40141e9a36739af3b SHA-256: e5466cce2e3a95458a105409084279c4e4f361daff3c623877304e99f680714f
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with at least one pointing to known malicious redirector infrastructure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/strik?utm_term=will+trimmerplus+attachments+fit+husqvarna In PDF document text
    • http://private-channel.site/gateway_b1_test_answers_unit_5ezll3.pdfIn PDF document text
    • https://rodetexozu.weebly.com/uploads/1/3/6/0/136096338/0a608eec4.pdfIn PDF document text
    • https://zinimejab.weebly.com/uploads/1/3/4/6/134653802/3945545.pdfIn PDF document text
    • https://zopamege.weebly.com/uploads/1/3/5/9/135966764/803495d53.pdfIn PDF document text
    • https://pusazaninad.weebly.com/uploads/1/3/4/3/134358808/mitaroxumowes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416136/normal_5fdac4b86265e.pdfIn PDF document text
    • https://gefidiwe.weebly.com/uploads/1/3/0/7/130738847/91493184.pdfIn PDF document text
    • http://help-copyrightviolationhelpcenter.com/69853784813alhze.pdfIn PDF document text
    • http://interbank.link/84101171082r1um6.pdfIn PDF document text
    • https://lufisadoxusixa.weebly.com/uploads/1/3/4/5/134583632/2970538.pdfIn PDF document text
    • https://jokuvaput.weebly.com/uploads/1/3/4/5/134589987/961b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444853/normal_60589c7919a11.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470837/normal_5fff94ebadb68.pdfIn PDF document text
    • https://pupaxutakigi.weebly.com/uploads/1/3/4/5/134579126/328e1ce6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382948/normal_5ff7802d210f1.pdfIn PDF document text
    • https://porojole.weebly.com/uploads/1/3/4/4/134462866/rujadum-posivubuko.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471114/normal_6068d8d8a0434.pdfIn PDF document text
    • https://nexojavadu.weebly.com/uploads/1/3/0/7/130775828/774429.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/forupokisip/bootstrap_3_dropdown_menu_form.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/savutedo.pdfIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/kupejaketa.pdfIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/age_of_youth_2_hardsub_indo.pdfIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/drawing_practice_sheets_for_kindergarten.pdfIn PDF document text
    • https://s3.amazonaws.com/sabobenuwe/pufipokanirujudiwugetak.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_off0001027f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1027F 5452 bytes
SHA-256: 57d536e113a5fc33138c282c217048bbe6ebdfa9713866e9711fc74149ada5ee
font_01_sfnt_off000114f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114F1 11740 bytes
SHA-256: 46bd1e3b7b15986f5f6041ea0eee9c0a33d49b1017f6148f5c04558d63fc432f

Open this report in the interactive analyzer, or submit your own file for analysis.