Malicious PDF — malware analysis report

Static analysis result for SHA-256 5347b972e3963213…

MALICIOUS

PDF

81.9 KB Created: 2021-03-30 11:15:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: b763efee9cceaf44c4174e44fd78a0f0 SHA-1: e886bbf20bd78e7354ec1a80e5b6ed1b0ea87b66 SHA-256: 5347b972e39632132bf159597421bf39ece60d12a051df2079073f62e9b84ccd
186 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, a common tactic for SEO manipulation or phishing campaigns. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://maypoin.ru/award?keyword=triptico+sobre+alimentacion+saludable+pdf PDF link annotation
    • https://bojuwidus.weebly.com/uploads/1/3/4/6/134698781/tonugatuzobakus_wofizimulaf.pdfIn PDF document text
    • http://medilawibume.scienceontheweb.net/bl_theraja_volume_1.pdfIn PDF document text
    • http://timinome.getenjoyment.net/gujunivafuriwawa.pdfIn PDF document text
    • https://tiletemilowa.weebly.com/uploads/1/3/2/7/132710791/muparo.pdfIn PDF document text
    • https://kilizilefepik.weebly.com/uploads/1/3/0/7/130775254/kuborenivotevuba.pdfIn PDF document text
    • https://gawudizilox.weebly.com/uploads/1/3/5/3/135300959/8078443.pdfIn PDF document text
    • https://nuwusiran.weebly.com/uploads/1/3/5/3/135321198/juzemukimo_sexufokazo_vadomome_letap.pdfIn PDF document text
    • https://gakujoxabusu.weebly.com/uploads/1/3/5/3/135394689/1537494.pdfIn PDF document text
    • https://fiwerabonu.weebly.com/uploads/1/3/4/3/134347662/wuferewi-xepaxawi-mosaxizetawunew.pdfIn PDF document text
    • https://jevakotimafunu.weebly.com/uploads/1/3/4/8/134878594/7604614.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://45ed8376-e832-497f-ab20-0a31924dc5db.filesusr.com/ugd/4b7290_e8d95101ec964d14b742076d440762f8.pdf?index=trueIn PDF document text
    • https://9f349447-249b-4747-956a-316fe86e371b.filesusr.com/ugd/d2b720_7f727a5eefd749beb88d681b2fbab9b3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tamovagag/19420334133.pdfIn PDF document text
    • https://s3.amazonaws.com/liluvad/badminton_history.pdfIn PDF document text
    • http://vegubom.atwebpages.com/86868586307.pdfIn PDF document text
    • https://a146b927-ed54-472d-b3a8-6b137e313b92.filesusr.com/ugd/4d400c_dc09cde22d094d098165f5d3e3208f86.pdf?index=trueIn PDF document text
    • https://393102e6-89af-4738-8cad-89662dba8dc5.filesusr.com/ugd/33a16d_9e6c8e78b8bf4d288afe13174dc15b6d.pdf?index=trueIn PDF document text
    • https://ebba3e40-d49f-4cc8-b137-373bb1124918.filesusr.com/ugd/384ea4_afe720cfbae94946935108f6fdfa85a7.pdf?index=trueIn PDF document text
    • http://kagijido.myartsonline.com/french_verb_conjugation_table_prendre.pdfIn PDF document text
    • https://e5baaea7-7007-41de-9367-4ebf3ed55875.filesusr.com/ugd/8e1900_00b2cb4384824cf2899490d95b45512b.pdf?index=trueIn PDF document text
    • https://04934832-22f3-474e-96de-b9d593e92251.filesusr.com/ugd/f390e7_40a7903e919a4abaa3f99253985493f1.pdf?index=trueIn PDF document text
    • https://c145ee04-3c3b-4786-8b94-e0511401b322.filesusr.com/ugd/de65f7_6e5b2717a51b4f05999b7010ececdd7d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fizaxo/furapatonobevewutidezib.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_off0000f524.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF524 1528 bytes
SHA-256: 64d53b4318ba7dc869bcefe2c6c56431e6e12bcaf96a32242cfa9e17b755ba3b
font_01_sfnt_off0000fcec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCEC 5392 bytes
SHA-256: 241ffd06acca7dfa8fafd4d286bba1eec177472352971efd42f224ca9271124f
font_02_sfnt_off00010f1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F1D 12680 bytes
SHA-256: a1a95336a414f29f051841d98a7e73bf415dc131a97a3e60eec79ea0c6642145

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