Malicious PDF — malware analysis report

Static analysis result for SHA-256 17d7996c1eb2c0bb…

MALICIOUS

PDF

49.4 KB Created: 2020-10-27 13:21:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: b9bd2755db39c9cce8fa549ce9be2a56 SHA-1: b9c5c17d5000d131cbf1b458f780712d12929158 SHA-256: 17d7996c1eb2c0bb98b6d8d3222c9b8cec6be91a5aa1a1f977f97511cbbf69fd
94 Risk Score

Malware Insights

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

The PDF document contains a link to a known malicious redirector, cctraff.ru, which is likely intended to lead the user to a malicious site. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

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/123?keyword=what+is+the+origin+of+shia+islam In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ed0957f-a72e-4f93-a221-d5b90b28a2f7/26405014427.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f3783b3-bd2f-4b35-b50b-35a3bf426bf7/zedux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/707103d3-7cfc-4801-a428-f481fd5d548b/pegidemolozuligaveba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e504e2d9-a5b5-4e83-b179-43154ff85b59/bogiwuxaj.pdfIn PDF document text
    • https://s3.amazonaws.com/juduk/baghdad_battery.pdfIn PDF document text
    • https://s3.amazonaws.com/xabalaru/bihar_daroga_previous_year_question_bank.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/bobbin_lace_patterns.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6576ffa-b50c-4737-9aed-bcb56c6dae95/matematiin_gnlk_hayatta_kullanm_slayt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad2e43bd-5e3d-4016-ac1b-6bd021a1f9d3/81969392895.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ef6fd44-6e3b-44b6-a338-75e4d363a55f/vuvalomegamaxegazow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49cbd17f-f155-4c21-965d-c074d01d444a/tebotiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb66f5cb-ce65-4700-b7ae-6ecfc11c87c0/61448574024.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47b350fe-dd37-4bc5-adc7-3a9c8dde8eb8/wigediveburad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9a3af31-4ff8-44a4-8805-52dda777f86d/lakeperexibepupimabolo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4116acaf-ab9d-4dd4-87ae-ad5492f1b1d0/money_2020_conference_2018_usa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a20abdf-8cf3-4efc-9b56-8577814ecbe9/tanutonujanukexi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7cb637e5-4168-41a3-830d-efe1af011283/64290556689.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b494782-cff4-4baf-a839-6f5902a2c4cd/23443859793.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_off000082d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82D6 5196 bytes
SHA-256: 4bb007391b0e6b19270d9ebaf618e263485c691641e822014881f64665023010
font_01_sfnt_off00009461.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9461 11364 bytes
SHA-256: 20d5d66bfa6db5037862148517ef95f6335eb098ef858bb7ab7f488dc6be880c

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