Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eaed68550a9da01…

MALICIOUS

PDF

92.6 KB Created: 2021-03-04 06:40:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 9afec4c956ac813fb4ebcd28fbeeea1d SHA-1: 0f27778c554dc1ff3d88b842675c50cdb5f3a4ec SHA-256: 0eaed68550a9da01702033eba0894bc3828a191efeceba1fb7de52504817cec9
184 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, indicative of a link farm designed to host or redirect to malicious content. The ClamAV detection and ML classifier further support its malicious nature, likely for phishing or malware distribution. No scripts were extracted, but the presence of numerous URLs suggests a redirection mechanism to a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8837

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.
  • 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
  • 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://soxebez.ru/strik?utm_term=actfl+core+practices+pdf PDF link annotation
    • https://cdn.sqhk.co/guzoladip/glDlmWX/brothers_pizza_menu_raynham_ma.pdfIn PDF document text
    • https://cdn.sqhk.co/budafitanu/eSXIjht/time_flow_game.pdfIn PDF document text
    • https://nowagomasililub.weebly.com/uploads/1/3/0/7/130775830/37dc36b98465b3d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495390/normal_5ff4b4557cefa.pdfIn PDF document text
    • https://cdn.sqhk.co/sowumavag/bihhijd/32068024951.pdfIn PDF document text
    • https://cdn.sqhk.co/jebuxanit/2hjgulF/little_heroes_dental_san_juan.pdfIn PDF document text
    • https://guwamiludakubor.weebly.com/uploads/1/3/1/4/131453222/lagagemam.pdfIn PDF document text
    • https://cdn.sqhk.co/lovojekaboxi/K7jehfg/ice_cream_cake_recipe_oreo.pdfIn PDF document text
    • https://cdn.sqhk.co/numavagoko/aghhggh/shipwrecked_definition_science.pdfIn PDF document text
    • https://cdn.sqhk.co/kabawamurelo/hdidjmS/r-_type_tactics_japan.pdfIn PDF document text
    • https://dibevapanowodi.weebly.com/uploads/1/3/0/7/130776811/73ae90808c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471253/normal_60335449c6acf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://debalipusafuj.epizy.com/zalupamavodom.pdfIn PDF document text
    • http://vukefuxi.epizy.com/jazz_bass_guitar_sheet_music.pdfIn PDF document text
    • http://vogidide.epizy.com/management_discussion_and_analysis_report_2016.pdfIn PDF document text
    • http://lazavosapazogil.epizy.com/zisomi.pdfIn 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_off00011b78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B78 18788 bytes
SHA-256: e421e7c4ab9c7b4d160fdc14245b719de0c026ca903b2f50e40c7e9a8b2d24ce
font_01_sfnt_off00015533.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15533 5140 bytes
SHA-256: d873c198da6246f8278406be9666a17b2523c2e153c4c200a55be6097ade25fb

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