Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f651227893d5191…

MALICIOUS

PDF

75.0 KB Created: 2020-11-14 17:44:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 001caf9c1510e85be2420fae13a03172 SHA-1: 71ba696dc8b6df8a4aa392631826a747c9e03f59 SHA-256: 4f651227893d51911d353e100b41ffe3874c5cb155b2848ba3740f0457c3b057
244 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, with one pointing to a known malicious redirector. The file is also flagged by ClamAV as 'Pdf.Phishing.Trojan'. The presence of multiple links to external PDFs, some hosted on disposable domains, suggests a link farm or phishing campaign designed to redirect users to malicious content. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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.
  • 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://traffine.ru/123?utm_term=sm-g920v+battery+replacement In PDF document text
    • https://cdn-cms.f-static.net/uploads/4417206/normal_5fa104ff36780.pdfIn PDF document text
    • https://jesasifewom.weebly.com/uploads/1/3/1/4/131453969/niwoferib.pdfIn PDF document text
    • https://puvapimasekasu.weebly.com/uploads/1/3/4/3/134398754/vakol.pdfIn PDF document text
    • https://jupovibofekek.weebly.com/uploads/1/3/4/4/134490290/sapoxizimikin.pdfIn PDF document text
    • https://lixaworone.weebly.com/uploads/1/3/1/8/131871871/5808518.pdfIn PDF document text
    • https://muvitaburire.weebly.com/uploads/1/3/4/4/134441723/672995.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367643/normal_5fa7c1b71c47f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408002/normal_5f9716171552d.pdfIn PDF document text
    • https://sisaseno.weebly.com/uploads/1/3/0/7/130776680/jawuzo.pdfIn PDF document text
    • https://gavuzamamezi.weebly.com/uploads/1/3/4/5/134590232/giwam.pdfIn PDF document text
    • https://purolejomi.weebly.com/uploads/1/3/0/7/130776639/xigurikikimotexejo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/mejados/ipad_pro_manual_user_guide_and_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/godoremitiwuja/ron_siegel_anxiety.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/cofunctions_worksheet.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC4E 5572 bytes
SHA-256: eddf9be01ea3bdc29383a30de794a8e44369b39d235c39a1bf74a9cb97d9d40e
font_01_sfnt_off0000ef37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF37 9976 bytes
SHA-256: f2d22b94d2bf86a8481b50994f51803860b18e5fdbc2a47f2efcec488f420eb3
font_02_sfnt_off0001115e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1115E 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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