Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d0c059238911a57…

MALICIOUS

PDF

73.5 KB Created: 2021-04-07 01:12:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: bfb266130c4718d41243d6742eca3aed SHA-1: 2cfe4d0c1570cd9bc54b5e82582aa8f899ca6447 SHA-256: 0d0c059238911a57e448d8a3bbf76248804f022586f163cc2e9f1cd5ebf89f59
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to disposable domains and are designed to redirect users to potentially malicious content. Heuristics indicate this is a link farm designed for SEO manipulation, likely to distribute malware or phishing content. ClamAV detection as 'Pdf.Phishing.Trojan' further supports the malicious nature of this document.

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://druttle.ru/strik?utm_term=cuisinart+dcc-1200+repair+manual PDF link annotation
    • http://fevinoreniwelik.sportsontheweb.net/2001_subaru_outback_engine_oil.pdfIn PDF document text
    • https://cdn.sqhk.co/janezewufaj/gJhcUe3/8588544458.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471474/normal_6058e4731d539.pdfIn PDF document text
    • https://cdn.sqhk.co/varugefezum/jbShggo/internet_manager_full_version_kuyhaa.pdfIn PDF document text
    • https://cdn.sqhk.co/xokipuxat/fnjd8YF/hungry_shark_world_descargar_gratis_pc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487416/normal_603e303850a5b.pdfIn PDF document text
    • https://cdn.sqhk.co/letijefa/5ijYHhc/pink_marble_2020_planner.pdfIn PDF document text
    • http://sewatumafuta.medianewsonline.com/anemia_que_es.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370744/normal_5ff7a1606e992.pdfIn PDF document text
    • http://fukijuwevo.getenjoyment.net/how_to_set_time_on_skmei_1163_watch.pdfIn PDF document text
    • https://cdn.sqhk.co/tenokesime/jcJiehd/battle_ops_apk_offline.pdfIn PDF document text
    • http://fujigukatujewu.medianewsonline.com/9573438116.pdfIn PDF document text
    • http://roxedizusugu.mywebcommunity.org/lodemavez.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fibesezati/how_to_clean_masterbuilt_electric_smoker_after_use.pdfIn PDF document text
    • https://89f68ddc-9f98-4e60-8afa-3e0ca6603e9e.filesusr.com/ugd/4725f1_f72f13df555d46ad86c4b0da134e2069.pdf?index=trueIn PDF document text
    • https://86f5e18a-8766-4ae7-b9bf-31430b627380.filesusr.com/ugd/911c12_1b4cd2d56a5e454c9cb632d12f22b63a.pdf?index=trueIn PDF document text
    • http://nejesezape.myartsonline.com/daughter_of_smoke_and_bone_movie_release_date.pdfIn PDF document text
    • http://bolirazebaf.myartsonline.com/how_much_annual_leave_do_i_have_left_calculator.pdfIn PDF document text
    • http://pojoviraxerojo.myartsonline.com/78559587933.pdfIn PDF document text
    • https://329f26c8-0235-4118-8622-173d264d9cf1.filesusr.com/ugd/221f3a_3d2ff5593eda43b5961e5056d16cf825.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dinilederu/where_to_get_a_transmission_service.pdfIn PDF document text
    • https://s3.amazonaws.com/gagotaniwipure/dotadidum.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_off0000e09d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE09D 5480 bytes
SHA-256: 7fec0ff2dcea412668a1927601b503c73d83092ad4b3d9fe31c540d76ffb94a1
font_01_sfnt_off0000f331.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF331 11156 bytes
SHA-256: c2733d6f9dbeab7a9b0516ebf5de82671f05e06a8c0823741069eb6a477ce8d3

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