Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bfe2d3906521514…

MALICIOUS

PDF

69.7 KB Created: 2021-02-26 20:41:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: c1296857ced8d2982f781b7eca4d6664 SHA-1: a9fffd45a10d3d124128a64a860a1dbd4fd82d43 SHA-256: 6bfe2d390652151408834091373cbd2996bb734ee9ab0a22ff1aa068ee54293f
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which are hosted on disposable domains and appear to be part of a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, contains a query about removing a hose connector, suggesting a lure to trick users into clicking malicious links.

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://resalured.ru/strik?utm_term=how+do+you+remove+a+moen+quick+connect+hose PDF link annotation
    • http://teachost.com/great_northern_popcorn_machine_popping_instructions7uudq.pdfIn PDF document text
    • https://mawubuzepegi.weebly.com/uploads/1/3/3/9/133989242/8136551.pdfIn PDF document text
    • http://rapalafipotofuw.iblogger.org/22857933450.pdfIn PDF document text
    • https://wirimodarezekas.weebly.com/uploads/1/3/5/3/135314182/tozonopakomexenijozu.pdfIn PDF document text
    • http://fragcups.com/map_castle_for_minecraft0g9ol.pdfIn PDF document text
    • http://pamesiso.22web.org/40442558283.pdfIn PDF document text
    • https://kunokepipadiri.weebly.com/uploads/1/3/3/9/133997431/a76e02a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xigamika.rf.gd/fegiguza.pdfIn PDF document text
    • http://xewabilema.epizy.com/aia_certificate_of_final_completion_form.pdfIn PDF document text
    • http://buwijakuwomem.rf.gd/33893713416.pdfIn PDF document text
    • http://vepunip.rf.gd/activator_office_2010_64_bit.pdfIn PDF document text
    • http://temomij.epizy.com/gufugaladasatufe.pdfIn PDF document text
    • http://jaxifepuxebadin.epizy.com/33105040897.pdfIn PDF document text
    • http://zexisudotelil.rf.gd/92829574789.pdfIn PDF document text
    • http://bisubop.epizy.com/do_anti_inflammatory_foods_work.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_off0000d5d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5D5 5552 bytes
SHA-256: 962ea4a6821100daec35aeaebcbe980500b1874e654532dad976cd085f46d198
font_01_sfnt_off0000e8a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8A1 9616 bytes
SHA-256: 5d1adf8d2864c4f5320359b87383a5f5df1ef37325496e6de049008aa8ceebc1

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