Malicious PDF — malware analysis report

Static analysis result for SHA-256 02f3455a0340cdab…

MALICIOUS

PDF

45.5 KB Created: 2020-10-28 13:50:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: f87662386bdbc29e1b0da025941c36b8 SHA-1: d0e71e6e379e7144051c95538e82839a52d6802d SHA-256: 02f3455a0340cdabf09f33d47451f6f753bb6de9db2c13ac59820c797c46060e
154 Risk Score

Malware Insights

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

This PDF document contains a lure related to obtaining free in-game currency, which is a common social engineering tactic. It embeds numerous links, with one specifically identified as a malicious redirector pointing to 'https://cctraff.ru/123?keyword=how+to+get+free+fifa+coins+in+fifa+mobile'. The presence of a large number of external links, many pointing to PDF files, suggests a link farm or SEO manipulation strategy to distribute malicious content. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://cctraff.ru/123?keyword=how+to+get+free+fifa+coins+in+fifa+mobile In PDF document text
    • https://vajuwapokovis.weebly.com/uploads/1/3/4/3/134361820/bofiwuja.pdfIn PDF document text
    • https://sakuvajavabese.weebly.com/uploads/1/3/1/3/131383602/xefuko_jadulogifu_fasakite_xalolarozibu.pdfIn PDF document text
    • https://zexenokupilifuw.weebly.com/uploads/1/3/4/3/134375928/vedujotol_xatomutevuto.pdfIn PDF document text
    • https://togitarusufojir.weebly.com/uploads/1/3/2/6/132681229/996d4b1.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/lanadez.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/sugaguxagu/how_to_annotate_in_notability.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/69246115179.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/2905344873.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4548/5725/files/71255781238.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0159/3502/files/fezag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9155/8551/files/13997311333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0506/4373/0630/files/financial_risk_management_project.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/2407/5936/files/bizofufupetijugefazovudi.pdfIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/92496006467.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/8012/2008/files/yardman_lawn_mower_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/7647/6828/files/converter_arquivo_word_para_love.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/67230103356.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9256/5404/files/fit_and_well_core_concepts_13th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/agenda_semanal_2018_para_imprimir_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/31675743032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/2604/5871/files/unroot_android_es_file_explorer.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_off00006a5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A5F 5396 bytes
SHA-256: 97dc338e662b2a6176536e64cc8f789c591df7d6310cf594cd2b1c8a468f2871
font_01_sfnt_off00007cb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB5 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_02_sfnt_off00008543.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8543 10256 bytes
SHA-256: 0002b7637fbeb8320e30cc03da0c5510693a21b9abb62e3c26f5f1bbc9133675

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