Malicious PDF — malware analysis report

Static analysis result for SHA-256 3adc08f3c386d8da…

MALICIOUS

PDF

34.2 KB Created: 2020-10-31 08:34:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 2e1aac038b5a6a2beb09f1fed357d4ad SHA-1: 1745662eb481d47f966894b1698a7e90dd15047a SHA-256: 3adc08f3c386d8da3501230bca867764c248b3297b4c9177f1d0a417389cdf2d
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.me/123?keyword=dragon+quest+11+strategy+guide+book In PDF document text
    • https://soremezu.weebly.com/uploads/1/3/1/0/131070226/kutebijenimerojoxa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389571/normal_5f8d974b6c2e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368242/normal_5f98187721e96.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/8ec0fe88.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367625/normal_5f88a9ba7d23f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384468/normal_5f96ff47d88e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377113/normal_5f8c5e0978b59.pdfIn 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/8a5fe8c8-2ffc-4e3d-9f2c-41d47b629c97/wegalopit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2e4392c-a579-425c-984d-4a7ab1cbf714/300_lb_olympic_weight_set_walmart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4114/3454/files/29945287384.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/3689/6151/files/guvolatabigujoborobezig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55e5d6c7-d861-4baf-b5a8-0f8dfc874e35/house_of_broken_love.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6848/9373/files/bevaju.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_off000047ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47CE 5444 bytes
SHA-256: bbba3c886eb1a051eca6fde7f20d757a65680ea218eaa35b8ad2b0b712d6a791
font_01_sfnt_off00005a6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A6C 9968 bytes
SHA-256: 4275879be5ec6249f1ee48b972b0c31df810c60e2bd379d9a3bda666419f7a03

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