Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd024e6f348fb9cc…

MALICIOUS

PDF

81.4 KB Created: 2021-05-13 08:50:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89f1acee16bbae87733bdcf159ac4958 SHA-1: 2b0e338824cfab88557cdab9a4f44f74787c276b SHA-256: bd024e6f348fb9cc3687041999e5d100455cabb84a182494fcf68961985fd0c4
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, suggesting a link farm or phishing lure designed to redirect users to malicious sites. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic strongly support this attack pattern. While no scripts were explicitly extracted, the nature of the PDF and its embedded links suggest it's designed to facilitate initial access via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ponafet.ru/strik?utm_term=how+to+operate+a+dura+heat+kerosene+heater
    • http://axecheat1.xyz/canavor_natalie._2018._business_writing_today_a_practical_guide._third_editionns27r.pdf
    • http://vuxilenusip.mypressonline.com/49658665972.pdf
    • https://dutosagow.weebly.com/uploads/1/3/0/7/130775111/nuzusotema.pdf
    • http://123dutch.com/824571040qnwfu.pdf
    • http://baxusajatos.sportsontheweb.net/company_profile_design_template.pdf
    • http://kudikadip.getenjoyment.net/forever_aloe_vera_gel_download.pdf
    • http://trydouche.xyz/123_media_player_classic_for_macj8b9a.pdf
    • https://fesomexipilajuj.weebly.com/uploads/1/3/3/9/133997099/dawataxofuruzu.pdf
    • https://vekafikag.weebly.com/uploads/1/3/5/9/135986004/0cf1945f.pdf
    • http://trokot-tonirovka.online/vozusueanv8.pdf
    • http://espaceabonnes.com/veravitutajudetotejm3gou.pdf
    • https://mofafodoler.weebly.com/uploads/1/3/0/8/130874416/mivomaroj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://a208a2de-cee2-48c2-86e3-c620a022946d.filesusr.com/ugd/dda32d_565d9b7671274710aedecb0d72238396.pdf?index=true
    • https://uploads.strikinglycdn.com/files/1d99a6f9-665b-4f4c-8650-ddb2b6d5a281/where_can_i_buy_a_tracfone_sim_card_kit.pdf
    • https://3f46bf15-0a8c-4e80-b3e5-a2e3bf90e008.filesusr.com/ugd/8e6e76_8469e7e30829433ab1890f401d1aa253.pdf?index=true
    • https://c0b8f06b-4e98-4d3d-89ef-2f08caba629a.filesusr.com/ugd/0c8cc8_5a52bdeaac9f4f728a26c80b8ae22792.pdf?index=true
    • https://d670dda7-df53-4ef1-8eda-d3256df28744.filesusr.com/ugd/dbbbec_ade8effbfd9c4473b40bd59aebcc286d.pdf?index=true
    • https://329f26c8-0235-4118-8622-173d264d9cf1.filesusr.com/ugd/221f3a_565d87883b1e482fac505f0cccc9c2d9.pdf?index=true
    • https://16cc4848-9a85-487f-bc1d-da55f68f8448.filesusr.com/ugd/dcf86b_ae15b2d792ce445f871d988af5939d48.pdf?index=true
    • https://6f672a44-e16c-4921-a0f1-e3781c0647c5.filesusr.com/ugd/bda22a_0139ba648d194c87a366380f6a8b637e.pdf?index=true
    • https://9579f988-9383-433c-acf3-5fff76e0c882.filesusr.com/ugd/191a6d_932e62da345b45da887aa9e941fd71ac.pdf?index=true
    • https://uploads.strikinglycdn.com/files/287976aa-8d67-4a64-b693-554db2ecea23/how_to_adjust_hook_timing_on_brother_sewing_machine.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f4fd.bin
2f2e4327fea7c2146571e918ce96f2416434db7fe16083bbf6b8101423404ab7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF4FD 4968 bytes
font_01_sfnt_off000105d8.bin
944c5f2fcbb7217840e7322b6e33b08f58fb76b35eb6c12d532c994bb26e4b64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105D8 10600 bytes
font_02_sfnt_off000129f2.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x129F2 4324 bytes

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