Malicious PDF — malware analysis report

Static analysis result for SHA-256 262a3cf8d9775f9f…

MALICIOUS

PDF

105.2 KB Created: 2021-05-31 02:00:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: cf52afd948b627d6621094abea3469c3 SHA-1: 480b7e8b90ac64352db73f8ee0aa506b415f16bc SHA-256: 262a3cf8d9775f9f71940b00b084004ef01ea6a6b606bcf70d9833ce5dc3794d
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable hosting services, suggesting a link farm designed to redirect users to potentially harmful content. The primary URL, 'https://maypoin.ru/strik?utm_term=dragon+ball+z+shin+budokai+3+ppsspp+download+freeroms', is presented as a download for game ROMs, a common lure for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9959

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/strik?utm_term=dragon+ball+z+shin+budokai+3+ppsspp+download+freeroms PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4406775/normal_5fe6328edd037.pdfIn PDF document text
    • https://ragusixiseditof.weebly.com/uploads/1/3/0/8/130814169/2866887.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417669/normal_5fcbe5f58837e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491414/normal_5ff2bb742ffbc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480393/normal_601c70ac30e2c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372073/normal_60446defa6528.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4493920/normal_60b4187448948.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445555/normal_606a0de8bfb5a.pdfIn PDF document text
    • https://vimuzepujox.weebly.com/uploads/1/3/4/3/134368191/1086911.pdfIn PDF document text
    • https://xeludelibiw.weebly.com/uploads/1/3/4/3/134371965/wefir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388824/normal_6069c8b935786.pdfIn PDF document text
    • https://jimitorivav.weebly.com/uploads/1/3/4/8/134878901/27de27b133fad.pdfIn PDF document text
    • https://lerizizevu.weebly.com/uploads/1/3/4/3/134314130/3afc1ac8217.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368741/normal_5ff8da769f742.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371010/normal_6039b45ace814.pdfIn PDF document text
    • https://nodekisoguzila.weebly.com/uploads/1/3/5/3/135313862/c4aead05a1900e.pdfIn PDF document text
    • https://lapefobok.weebly.com/uploads/1/3/4/6/134663543/jipumuwut-tixojijab.pdfIn PDF document text
    • https://towoxaji.weebly.com/uploads/1/3/0/7/130740158/jimiwozi_tevuk_dagizujevabu_fegawutipupako.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4457868/normal_60b0451536807.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420245/normal_601af7f45a415.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/22bd8592-a4c0-4336-b6da-c60b1030f53e/man_in_the_mirror_piano_sheet_music_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69b6dd53-d48b-41a0-9149-5e64a433f79c/tefaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4aff2d8-1647-4f67-a46c-55439c4dcbfc/nikon_coolpix_s33_manuale_italiano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a6d7349-dae1-4e8d-8f64-23d0bad8c014/1.3_caracteristicas_principales_de_la_logistica_y_cadena_de_suministro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b92fa9b1-f800-4346-81ff-55c9445bf54e/22775363716.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC13 6588 bytes
SHA-256: 24fd6868f187b5667792517f9f69d22ac5a3de5011d4d3824467392effeade79
font_01_sfnt_off00010c8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C8D 5964 bytes
SHA-256: 5bf00ae6daaa57d8b98dba4295f8ab38f90795979a844ce8216141b25c77c74f
font_02_sfnt_off000120c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120C5 18388 bytes
SHA-256: 1b9a720789092412c9ef79258d1010c81af72ce32bd62fe965ac8772e800e513
font_03_sfnt_off00014d67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D67 11816 bytes
SHA-256: c7e8e41b4c54b5d6904871b9838ab143bf2fe6c781b6dd9bc1ee532929163775
font_04_sfnt_off000175ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x175EF 17372 bytes
SHA-256: 5bd123860035e5d034f89e52d945eee50f5b785bb49aaafab2f259cffc9110cc
font_05_sfnt_off00018dd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18DD6 1736 bytes
SHA-256: 5095ccdfdd328c3f25b1766e9c65bca58fa839170fcb9f3db3c20e130d955aff

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