Malicious PDF — malware analysis report

Static analysis result for SHA-256 468ae8b88dc2c1d0…

MALICIOUS

PDF

83.7 KB Created: 2021-03-31 09:52:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: d9109343bc68dcf85ebe0f4848f4635b SHA-1: ff4ad756499acbadb7189d8f97abac5301607351 SHA-256: 468ae8b88dc2c1d0e7c4957ab7e3c12bb8c9f79a1f75ae45322b1cac9ab7d072
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, with several pointing to disposable domains and one specifically identified as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were extracted, the PDF structure and URL distribution suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jacksth.ru/award?keyword=carthusian+statutes+pdf PDF link annotation
    • http://rijewomel.scienceontheweb.net/bibigixumadari.pdfIn PDF document text
    • https://cdn.sqhk.co/motuwezelu/1gffgfO/helix_dream_catcher.pdfIn PDF document text
    • http://pigigozoruda.mypressonline.com/tenomadetakubipituva.pdfIn PDF document text
    • http://nutristrike-shop.ru/wufibepofobegaf7k5hr.pdfIn PDF document text
    • http://tiktokcopyrighthelpteam.com/spectral_graph_theoryqcqnc.pdfIn PDF document text
    • http://greatmasters.biz/relimovaxoveloneza14qj7.pdfIn PDF document text
    • https://cdn.sqhk.co/genopeno/ccnhcrg/indoor_water_park_iowa_city.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e5baaea7-7007-41de-9367-4ebf3ed55875.filesusr.com/ugd/8e1900_20ef62e1e67d4fe0a44f41e02fbc8248.pdf?index=trueIn PDF document text
    • https://357b8bef-7330-4cfe-b31d-389db25c4d5a.filesusr.com/ugd/4c76bf_042b73c2f53a488089d63b1175a87c85.pdf?index=trueIn PDF document text
    • http://jukasuxoseki.atwebpages.com/how_much_money_does_premiere_pro_cost.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd87727b-9a74-4798-9624-7c4d4b76095d/how_to_find_the_area_of_a_triangular_prism_net.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70b754fe-5401-4f93-9ff8-5ec1b2c944a3/gebigogedaga.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/15954633428.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/raxeweroso.pdfIn PDF document text
    • http://famekuputoda.myartsonline.com/58067999224.pdfIn PDF document text
    • https://b20aee1f-b1b7-4e4e-be5e-d884e4ece670.filesusr.com/ugd/10e3af_302842cba4284703987a616ab7f175f5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bupijila/fraction_worksheet_for_grade_6.pdfIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/86354340723.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/camera_360_android_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76986561-3534-4ce4-9ef3-b93994dc9b79/96703246551.pdfIn PDF document text
    • https://80b2a579-f9ed-4aa0-b91a-ac3c8973c086.filesusr.com/ugd/353d00_5582ab4764f44e77969e6454a44b4bd5.pdf?index=trueIn 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_off00010a56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A56 5004 bytes
SHA-256: da9791ef23aa2e4ea1aec14ae1bc612b551aaaf74814157e88aef375915b2db5
font_01_sfnt_off00011b4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B4F 10676 bytes
SHA-256: 7476124feec274cb8792724228a14e3a4a00c55bae8b9a1d52bd8488bc1a2bc8

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