Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c85e5e2a6bdc591…

MALICIOUS

PDF

48.2 KB Created: 2020-10-30 18:35:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 08bf9aca0ddc0de2b6e6b5b86a2a3fae SHA-1: 186adc3752ad84d9d712b4dc9513b635c2b5f936 SHA-256: 6c85e5e2a6bdc591923e5c511f051fb8909b75673e2e867b4936a01449cdb831
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, https://cctraff.ru/strik?keyword=oblivion+keyblade+kingdom+hearts, is the primary indicator of malicious intent. While the document body is heavily obfuscated, the presence of this URL strongly suggests a phishing or malware distribution attempt. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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/strik?keyword=oblivion+keyblade+kingdom+hearts In PDF document text
    • https://xumabilere.weebly.com/uploads/1/3/1/1/131163638/xigaguzi-kowizelajofo.pdfIn PDF document text
    • https://wozuwonasanava.weebly.com/uploads/1/3/1/4/131483955/8696149.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/606a361e-4d9f-4a8b-8f96-67cb3f603965/80392793216.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/dictionary_english_to_hindi_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/4972/9191/files/96976540049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/4359/3633/files/japanese_wood_joinery.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/poloxifixazujami.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/the_crucible_act_two_questions_answer_in_complete_sentences.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7359e68c-d5af-4391-b9b0-6b4bb9cc30bb/bopatubewanakilewidaluvow.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/21846255330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/1364/2696/files/zagumosugugeku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/7896/2331/files/73451228375.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/ng_feeding_procedure.pdfIn PDF document text
    • https://s3.amazonaws.com/setaxilitozuko/pathfinder_kingmaker_cleric_of_sarenrae.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/3044/5731/files/81664381765.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_off00006e25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E25 5420 bytes
SHA-256: e4311439447bb432b32c46c5b586896a6645e4b63c111f05fa882509d7d96cc9
font_01_sfnt_off00008066.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8066 10844 bytes
SHA-256: 073cb0b1ee44cce613af305eadc33bca664977528c6780206431263d69a17795
font_02_sfnt_off0000a55b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA55B 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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