Malicious PDF — malware analysis report

Static analysis result for SHA-256 c250286914bc7cfc…

MALICIOUS

PDF

74.3 KB Created: 2021-02-28 12:24:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 17737c2bad0be42e4bced6bf28bdcea5 SHA-1: b06b207c4f3bfa9dc285559b611321f384d72c13 SHA-256: c250286914bc7cfcdf12182de5a438ae871d57cad70cc34de4c4c8d1823c6089
126 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to disposable hosting services, and one specifically to 'fokemale.ru' with a 'strik' path, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with a phishing lure designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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://fokemale.ru/strik?utm_term=multiplication+and+division+facts+practice+worksheets PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4381730/normal_5fdcb5d690f94.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489429/normal_5feb589a95c29.pdfIn PDF document text
    • https://pawonojureva.weebly.com/uploads/1/3/4/5/134522231/9765579.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4530457/normal_5ffbb08e21a6b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402533/normal_5ff42a75a1579.pdfIn PDF document text
    • https://zodoxofavuzawa.weebly.com/uploads/1/3/1/4/131437464/sebepulufabi-wabivumiraxo-wosilekugude.pdfIn PDF document text
    • https://kowedeta.weebly.com/uploads/1/3/0/7/130775164/vunaragapinovevenimo.pdfIn PDF document text
    • https://jawuvufos.weebly.com/uploads/1/3/4/8/134856807/9bc39e26f98ac.pdfIn PDF document text
    • https://bokowamimufap.weebly.com/uploads/1/3/2/7/132712050/fexafusanoje.pdfIn PDF document text
    • http://zumedemuruva.22web.org/45075388748.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416660/normal_5fefa0664689c.pdfIn PDF document text
    • https://xafasujogi.weebly.com/uploads/1/3/4/3/134374351/6f04cf4b.pdfIn PDF document text
    • https://luzulobopado.weebly.com/uploads/1/3/2/6/132681737/51e38018d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403417/normal_60044c802c5b5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gitadafip.rf.gd/salesforce_lightning_map_report.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_off0000e4c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C1 5464 bytes
SHA-256: 8ea9eee5cd6db6d7ae92cca9481eac3e4d993c2cd688e81978254aa2d4db70c4
font_01_sfnt_off0000f774.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF774 10892 bytes
SHA-256: 361c1a7c63e4440b3a0aeb685e87d4d619ab1582d7aa8b2869b74ee4967257ef

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