Malicious PDF — malware analysis report

Static analysis result for SHA-256 39e808282aba2362…

MALICIOUS

PDF

79.1 KB Created: 2021-02-18 06:51:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 12a23f90a01b480294020996acae3547 SHA-1: 15a39547f93720dd36fd7a9f00ee8b41014dc634 SHA-256: 39e808282aba23626bc0851e449028bf5e56b492edf2bab74e4222c2e538840e
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • 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://jottigo.ru/strik?utm_term=who+sells+us+craftmaster+water+heaters PDF link annotation
    • https://monowulesamewul.weebly.com/uploads/1/3/2/6/132682048/pojuxejofav-fofut-kugarovugafud.pdfIn PDF document text
    • http://ergors.space/paediatric_anesthesiahnkor.pdfIn PDF document text
    • http://wwnews.site/why_wont_my_computer_monitor_turn_on2x4cy.pdfIn PDF document text
    • http://tryse.xyz/amanullah_gondal_gender_studieskex89.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421360/normal_5fc5e8e623e22.pdfIn PDF document text
    • https://mexobuvuxe.weebly.com/uploads/1/3/4/3/134369937/565459.pdfIn PDF document text
    • https://govotewimodiku.weebly.com/uploads/1/3/4/6/134649218/753c7a70637a978.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455377/normal_6011d333cd0eb.pdfIn PDF document text
    • https://tusosalowikos.weebly.com/uploads/1/3/1/4/131453146/1052938.pdfIn PDF document text
    • http://gnatural.space/alkaline_diet_chart_for_weight_losshqxm0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450418/normal_5fd24e7c2ea2b.pdfIn PDF document text
    • http://teasmall.space/kazutezewatipig9xedw.pdfIn PDF document text
    • https://zodekunomaxuj.weebly.com/uploads/1/3/0/7/130739112/tibarusonul.pdfIn PDF document text
    • https://naruvemekojesez.weebly.com/uploads/1/3/4/6/134685524/95d72aaecd351c.pdfIn PDF document text
    • http://afracheat4.xyz/vezodenizubapigk4r03.pdfIn PDF document text
    • http://afterdealer.pro/73563064754w2n25.pdfIn PDF document text
    • http://romeita.fun/winagiso2dg.pdfIn PDF document text
    • https://zovipimisog.weebly.com/uploads/1/3/1/1/131163747/7734173.pdfIn PDF document text
    • http://thedouche.xyz/84123185605jbihv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410204/normal_6009d4a3355ad.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/xidazeze/tovotifejix.pdfIn PDF document text
    • https://s3.amazonaws.com/waxapoz/29454877348.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_off0000f967.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF967 5224 bytes
SHA-256: 6358834a2570b5296b27e0c8bd2f8acea051472cf108d7bbee38baffe51ae52e
font_01_sfnt_off00010b1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B1D 10400 bytes
SHA-256: eb799ae5e7a0ffa2e9aa80441b64bfe092aa454e03849ce93b06bd9238691d9e

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