Malicious PDF — malware analysis report

Static analysis result for SHA-256 307eef638d038459…

MALICIOUS

PDF

46.2 KB Created: 2020-11-02 06:59:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: a0104e8eea4694e350d44c859688f26f SHA-1: 2d06339e7567debc713bb71502e0121e75afddcb SHA-256: 307eef638d03845984b529caef3b4bfd62be1682af52c575e093f0ced6ba0e2a
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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://ttraff.ru/123?keyword=dark+souls+guide+pdf In PDF document text
    • https://fanawilixu.weebly.com/uploads/1/3/1/4/131408209/xemibuzuri.pdfIn PDF document text
    • https://julefezi.weebly.com/uploads/1/3/4/1/134131413/telopebifepesibixewi.pdfIn PDF document text
    • https://sizojupitad.weebly.com/uploads/1/3/4/3/134332657/pokoxanemibaxo_kodikudovila.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/32e063a95e.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://s3.amazonaws.com/babetafaperaxov/shinjuku_map_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2087/7465/files/what_is_ifa_berlin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d63f44a-7fd3-4f4f-8d5d-f4677a64e09d/19340949131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9451/6930/files/zinazade.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/wifigakomizimi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81d15f67-8b58-42df-b60b-b1ced0033a36/xokoguxane.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/anglican_breviary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91364786-79cf-4665-84da-b0235bdac81b/fifar.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/43243819148.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03d15e62-ec5c-4e6b-8c18-d134f3d3b538/38294050271.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/check_cashing_open_near_me.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_off00006969.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6969 4968 bytes
SHA-256: fc6c1d176f89c954003767c824c7430ad9daa5653ecdc62d1393ad23b141aad3
font_01_sfnt_off00007a6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A6B 10480 bytes
SHA-256: 073bec3db8c32ba3e7043836f4f7a3f997b28dcdf105e4a7d8fd4d4fdbcf6bd3
font_02_sfnt_off00009df1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DF1 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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